We've researched and ranked the top Sitecore development companies who create customized online platforms that drive business growth. Discover the best local and global companies in the table below and filter them by location size, cost and reviews to select the best agency partner for your needs.

Sitecore Developers

75 Companies-Rankings updated: October 18, 2026
Sitecore

Organic rankings are determined by five factors: top services, reviews, portfolio, awards/press, and team expertise. Sponsored listings pay for a placement that appears above organic positions. Sponsorship does not affect star ratings or review content - read more on our methodology page.

Sitecore × Construction × Under $1,000 ×Clear Filters
  • Leading Digital Marketing and Software Company in Oman

    Incubix is an IT consulting and business solutions company that specializes in assisting corporations in digitally transforming their businesses through the use of innovation and emerging technologies...

    Top Services:

    • Digital Services
    • Graphic Design
    • Design Services
    • Web Design
    • UI/UX Design
    • Show more
    Location
    Muscat, Oman
    Number of Employees
    Under 49
    Average Hourly Rate
    $10/hr
    Minimal Budget
    Under $1,000
  • Strategic partners in your progressive ROI.

    Maiden Stride is your premier digital agency, offering comprehensive services in web design, development, and digital marketing, encompassing search engine optimization (SEO), pay-per-click (PPC), and social media marketing (SMO). We provide a seamless solution for businesses seeking excellence in their...

    Top Services:

    • Social Media Marketing
    • Digital Marketing
    • Content Marketing
    • eCommerce
    • SEO
    • Show more
    Location
    Kanpur, India
    Number of Employees
    50 - 99
    Average Hourly Rate
    $30/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    1 Project Listed
  • We are the marketing agency of tomorrow, bringing big ideas to small businesses today.

    We are LC3 Creative, based in East Liverpool, Ohio, a digital marketing agency founded in 2020 with a mission to empower and uplift local small businesses. Rooted in a commitment to excellence - we specialize in providing innovative and tailored marketing solutions, ranging from web development and graphic...

    Top Services:

    • Digital Marketing
    • Web Design
    • Social Media Marketing
    • Advertising
    • SEO
    • Show more
    Location
    East Liverpool, Ohio
    Number of Employees
    Under 49
    Average Hourly Rate
    $21/hr
    Minimal Budget
    Under $1,000
  • Premium Designs at low price Website and App Development Company

    We are offering end-to-end web development, Custom designs, App development also ERP billing Softwares for businesses at a very low pricing. We provide best and premium work at just low budget...

    Top Services:

    • Graphic Design
    • Web Design
    • Web Development
    • eCommerce Development
    • UI/UX Design
    • Show more
    Location
    Delhi, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $5/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    3 Projects Listed
  • Intelligize Digital

    About Intelligize DigitalIntelligize is a leading-edge internet marketing agency that builds successful digital campaigns and optimizes your website, increasing leads, sales, and helping you obtain customers...

    Top Services:

    • Web Design
    • WordPress Website Design
    • eCommerce Development
    • SEO
    • ERP Consulting
    • Show more
    Location
    Delhi, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $25/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    4 Projects Listed
  • Where Brands Get Found

    MKR Techsoft helps businesses grow with smarter digital strategies for todays evolving search landscape. From SEO, SMO, AEO, and GEO to performance marketing and AI-powered solutions, we boost visibility, attract qualified leads, and drive measurable, long-term growth...

    Top Services:

    • Digital Marketing
    • Web Design
    • Social Media Marketing
    • Web Development
    • eCommerce Development
    • Show more
    Location
    Gurdaspur, India
    Number of Employees
    100 - 249
    Average Hourly Rate
    $100/hr
    Minimal Budget
    Under $1,000
  • Empowering Digital World

    Digital Websynation is a diversified global IT services company that offers optimal IT Solutions And services to the customers all around the globe by bringing up right processes, technologies, strategies and people together in a very easy-going manner. We offer custom software development, Mobility...

    Top Services:

    • Web Development
    • Digital Services
    • SEO
    • Social Media Marketing
    • Software Development
    • Show more
    Location
    Noida, India
    Number of Employees
    500 - 999
    Average Hourly Rate
    $1/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    5 Projects Listed
  • Innovate Integrate Elevate.

    Itriger Innovations Pvt Ltd specializes in cutting-edge web, mobile, and software solutions, leveraging the latest technologies like .NET 8, Blazor, and React to build scalable, high-performance digital products. From custom websites to enterprise software, we transform ideas into powerful solutions...

    Top Services:

    • Web Design
    • Web Development
    • eCommerce Development
    • WordPress Website Design
    • Mobile App Development
    • Show more
    Location
    Jaipur, India
    Number of Employees
    50 - 99
    Average Hourly Rate
    $6/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    1 Project Listed
  • Let's Grow With Technology

    CyMax Technologies is an IT & ICT service provider based in Islamabad, Pakistan. CyMax emphasizes innovation, reliability, and customer-centric service as core values, aiming to empower businesses to thrive with secure, scalable technology solutions...

    Top Services:

    • Digital Marketing
    • AI Development
    • Cybersecurity
    • Software Development
    • SEO
    • Show more
    Location
    Islamabad, Pakistan
    Number of Employees
    100 - 249
    Average Hourly Rate
    $100/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    1 Project Listed
  • Global CRM, Cloud & AI Transformation Partner | Salesforce Ridge (Silver) Partner & Dynamics 365 Exp

    Create Possibilities with Salesforce, Data and AI...

    Top Services:

    • eCommerce Development
    • Mobile App Development
    • Software Development
    • CRM Consulting
    • ERP Consulting
    • Show more
    Location
    Ahmedabad, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $20/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    2 Projects Listed
  • Website Development, App Development Solutions and Digital Marketing Services

    Dqot Solutions is a global tech partner offering software, mobile app, website, and digital marketing services. We create innovative digital solutions for startups and enterprises worldwide. Our experts turn ideas into powerful experiences, driving growth...

    Top Services:

    • eCommerce Development
    • Web Development
    • WordPress Website Design
    • Digital Marketing
    • PPC
    • Show more
    Location
    Jaipur, India
    Number of Employees
    100 - 249
    Minimal Budget
    Under $1,000
  • AI-Driven Full-Stack Digital Marketing Agency

    Founded in 2021 by research engineer Er. Jagmohan Kurmi (M.Tech), FutureTech Digital Marketing Agency bridges the gap between technical engineering precision and aggressive commercial growth. Headquartered at SAF Road, Sanjeev Nagar Colony, Makroniya, Sagar (HQ), FutureTech specializes in delivering...

    Top Services:

    • Web Design
    • Web Development
    • Branding
    • Digital Services
    • Digital Strategy
    • Show more
    Location
    Sagar, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Minimal Budget
    Under $1,000
  • Data-Driven Digital Marketing and IT Solutions.

    Advotis Agency is a digital marketing firm based in Pune, specializing in data-driven strategies to accelerate business growth. Their services include SEO, Google Ads, social media marketing, web development, mobile app development, and more. They offer tailored solutions across various industries such as...

    Top Services:

    • Web Design
    • Web Development
    • WordPress Website Design
    • UI/UX Design
    • eCommerce Development
    • Show more
    Location
    Pune, India
    Number of Employees
    50 - 99
    Average Hourly Rate
    $40/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    3 Projects Listed
  • The Tech Way of Life

    We create customized websites and software for businesses, mentors, professionals, and agency...

    Top Services:

    • Web Design
    • Web Development
    • eCommerce Development
    • UI/UX Design
    • IT Services
    • Show more
    Location
    Aurangabad, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $20/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    1 Project Listed
  • Custom software, web and mobile apps, CRM platforms, data science and managed IT one partner from st

    Custom software, web and mobile apps, CRM platforms, data science and managed IT one partner from strategy through launch and support...

    Top Services:

    • Web Design
    • Web Development
    • UI/UX Design
    • eCommerce Development
    • CRM Consulting
    • Show more
    Location
    Kanpur, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $25/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    1 Project Listed
  • Engineering Absolute Digital Authority

    Arisys Global engineers elite digital ecosystems for brands looking to dominate their market. We fuse high-performance web engineering with scalable AI-driven automation to transform your digital footprint into a high-conversion revenue pipeline...

    Top Services:

    • Design Services
    • Reputation Management
    • Digital Strategy
    • Web Design
    • Web Development
    • Show more
    Location
    Delhi, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $40/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    1 Project Listed
  • Data-Driven SEO Solutions for Sustainable Business Growth

    CodePeko is a results-focused SEO agency helping businesses improve search visibility and drive sustainable growth. We specialize in Technical SEO, Local SEO, Content Strategy, Link Building, SEO Audits, and AI Search Optimization. Our team combines data, performance insights, and ethical SEO practices to...

    Top Services:

    • Web Design
    • UI/UX Design
    • eCommerce Development
    • WordPress Website Design
    • Web Development
    • Show more
    Location
    Noida, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $40/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    1 Project Listed
  • Our Strategy, Your Growth.

    Vedam Vision is an India-headquartered digital marketing agency helping businesses grow through SEO, performance marketing, branding, websites, social media, content and practical AI automation. We work remotely with teams in India and international markets, connecting strategy, creative execution and...

    Top Services:

    • Digital Services
    • Branding
    • Digital Strategy
    • Package Design
    • Web Design
    • Show more
    Location
    Bhopal, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $15/hr
    Minimal Budget
    Under $1,000
  • Your Trusted PartnerFor IT Solutions

    Nextryzer is your full-service digital growth partner, offering custom software development, modern website design, mobile app development (iOS & Android), and provides digital marketing services. We create user-focused solutions that help businesses grow faster...

    Top Services:

    • Software Development
    • Web Development
    • Mobile App Development
    • eCommerce Development
    • Digital Marketing
    • Show more
    Location
    Ludhiana, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $14/hr
    Minimal Budget
    Under $1,000
  • We Don't Just Build Tech. We Build Growth Engines for Ambitious Brands.

    Zevenstone is a creativetech powerhouse blending software engineering, brand design, and performance marketing to fuel unstoppable business growth...

    Top Services:

    • Digital Services
    • Graphic Design
    • Logo Design
    • Web Development
    • UI/UX Design
    • Show more
    Location
    Chennai, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $10/hr
    Minimal Budget
    Under $1,000
  • Digital Solutions Simplified

    Talencee is a Gurugram-based digital marketing and IT solutions agency helping startups and growing brands strengthen their online presence. We specialize in web development, SEO, and social media management, focusing on measurable growth and long-term partnerships. Our work is data-driven, scalable, and...

    Top Services:

    • Mobile App Development
    • Software Development
    • Web Development
    • Branding
    • UI/UX Design
    • Show more
    Location
    Gurgaon, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $100/hr
    Minimal Budget
    Under $1,000
  • Trusted Affordable Web and Mobile Software Development Company in India.

    LnP Infotech Pvt. Ltd. is a Leading Mobile App and Web Development Company in Mohali India which was incorporated in 2018...

    Top Services:

    • Web Development
    • eCommerce Development
    • Software Development
    • Mobile App Development
    • AI Development
    • Show more
    Location
    Mohali, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $11/hr
    Minimal Budget
    Under $1,000
  • Build. Market. Automate. Grow.

    Brand Orbit Hub is a digital growth and technology agency helping businesses build stronger brands, attract customers, and scale through technology. We combine digital marketing, web and e-commerce development, mobile apps, CRM, ERP, SaaS, automation, branding, content, and virtual support to create practical...

    Top Services:

    • Digital Services
    • Reputation Management
    • Digital Strategy
    • Web Development
    • eCommerce Development
    • Show more
    Location
    Lahore, Pakistan
    Number of Employees
    Under 49
    Average Hourly Rate
    $30/hr
    Minimal Budget
    Under $1,000
  • Your Growth Partner.

    Digital Upshot is a dynamic digital marketing agency committed to elevating your online presence and driving tangible results. With tailored solutions spanning SEO, PPC, social media management, and content creation, we empower businesses to thrive in the digital landscape. Discover the power of strategic...

    Top Services:

    • Digital Marketing
    • SEO
    • PPC
    • Social Media Marketing
    • Email Marketing
    • Show more
    Location
    Gurgaon, India
    Number of Employees
    50 - 99
    Average Hourly Rate
    $15/hr
    Minimal Budget
    Under $1,000
  • Smarter Software. Automated Growth.

    DataX Technologies is an Islamabad software company building custom web and mobile apps, CRM/ERP systems and AI automation. Since 2021 we've launched seven in-house products used by 42+ businesses, from travel and real estate CRMs to fleet software and restaurant POS. For clients in Pakistan and abroad, we...

    Top Services:

    • Web Development
    • eCommerce Development
    • Mobile App Development
    • Software Development
    • CRM Consulting
    • Show more
    Location
    Islamabad, Pakistan
    Number of Employees
    Under 49
    Average Hourly Rate
    $35/hr
    Minimal Budget
    Under $1,000

Why companies trust DesignRush

Every agency is independently vetted before it can be listed or ranked

1

Identity Check

We verify businesses and reviewer LinkedIn profiles for integrity.

Agencies vetted
128,514+
2

Portfolio Review

We review agency work, case studies, and results to confirm skill.

Applicants rejected
48%
3

Ongoing Audit

We monitor listings regularly; outdated agencies are removed.

Agencies verified
75

Some agencies pay for sponsored placement, clearly labeled and held to the same vetting standards.

See how rankings and monetization work.

Sitecore Development Company Hiring Guide

What is a Sitecore development company?

Sitecore development company is a company that provides services related to Sitecore, a powerful digital experience platform (DXP) used for creating and managing websites and digital marketing campaigns. These agencies typically provide end-to-end, tailor-made services for businesses to maximize Sitecore’s capabilities in content management, eCommerce, and personalized user experiences.

Sitecore development revolves around Sitecore’s management products and tools:

  • Content Hub One: An agile CMS for quick time to market
  • XM Cloud: A SaaS CMS for enterprise applications
  • Customer Data Platform (CDP): Captures and analyzes user activity
  • Content Hub DAM: Tools for asset management and integration
  • Search: Indexing technology for content extraction
  • Send: Email design and marketing automation
  • OrderCloud: API-first eCommerce solution
  • Discover: Product data indexing and recommendations
  • Connect: No-code API connection tool

Trusted by over 3,000 brands and connected to over 800 technology partners worldwide, Sitecore is one of the leading digital experience platforms in the market. The platform’s strengths lie in its fully customizable omnichannel architecture, which provides consistent digital experiences across different channels and allows developers to deploy and manage code across multiple sites using a single instance. This versatility has helped companies reduce time spent managing content by 80% and time to market by 50% for digital properties.

What do Sitecore development companies do?

Sitecore development companies implement, customize, and maintain the Sitecore digital experience platform. They set up and configure Sitecore, develop custom features, migrate existing websites to Sitecore, and provide ongoing support and optimization. Additionally, they offer strategic consulting on digital marketing and customer experience, ensuring businesses take advantage of Sitecore's full potential to deliver engaging, personalized digital experiences.

Their primary services include:

  • CMS implementation and customization: Setting up and configuring the Sitecore platform to meet business needs, including initial installation and customization
  • Custom development: Creating custom features, modules, and integrations to extend Sitecore's functionality
  • Migration and upgrades: Ensuring a smooth migration of the client’s existing systems to Sitecore or upgrade to a newer version
  • Hosting, support, and maintenance: Providing managed services such as server-hosting, site enhancements, and bug fixes
  • Integration and API development: Connecting the Sitecore platform to other systems, such as CRM, ERP, and marketing automation tools, through custom APIs
  • Testing and personalization: Conducting various testing methods to personalize and optimize user experiences
  • Training and education: Conducting training programs to help businesses utilize the Sitecore platform effectively
  • Content management: Ensuring content is created, organized, and delivered efficiently across different channels. The agency might also recommend and implement additional CMS tools to support this
  • eCommerce solutions: Developing and managing eCommerce capabilities using Sitecore's OrderCloud and other related tools
  • Digital strategy and consulting: Providing strategic advice on leveraging Sitecore for digital marketing, personalization, and customer experience management

ENMAX, one of Canada’s leading energy providers, partnered with Fishtank, a Sitecore development company, to migrate its outdated website to a new platform. Its old infrastructure limited its ability to launch and manage marketing campaigns, so it needed a more dynamic platform to improve its digital experience.

So, Fishtank built a new website using Sitecore's XM Cloud platform. This cloud-native SaaS platform allowed ENMAX to more efficiently create and distribute digital experiences across different media. Fishtank also used Sitecore's other best-in-class technologies such as the Content Hub and customer data platform to improve its capacity to create and manage custom content and digital assets.

ENMAX’s migration to Sitecore cloud resulted in a more flexible development process and the ability to adapt to the market’s quickly changing needs. The revamp also repositioned the company as a technology leader in Canada’s energy sector.

How much do Sitecore developers charge for their services?

Sitecore developers typically charge$53 to $73 per hour for their services, depending on their experience, areas of expertise, and other factors. 

Additional expenses may also be added to the final cost depending on the following:

  • Licensing: Costs vary based on site visits, users, and add-ons
  • Contract type: Hourly rates vs. fixed project fees
  • Complexity: Projects that require custom features, full modules, or integration with third-party platforms increase the final cost
  • Number of websites: The more websites that need to be implemented or maintained via Sitecore, the higher the cost
  • Support level: 24/7 support and extra services raise rates
  • Location: Urban areas with high living costs charge more. For example, rates in California average $61 per hour, while Tennessee averages $47

The top 50 Sitecore developers on DesignRush charge an average of $58 per hour. Roughly 12% accept projects with a minimum budget of less than $1,000, while only 5.5% require a $50,000+ minimum budget.

Why should I hire a Sitecore development agency?

You should hire a Sitecore development agency because it allows businesses to cut through the technical complexities of Sitecore and maximize its potential to enhance marketing campaigns and create a rich customer experience.

Some of the specific benefits you’ll receive include:

  • Access to expertise: Sitecore development agencies can provide you with a team of specialized tools and developers with extensive experience in Sitecore development. This translates to high-quality end products and a 500% increase in productivity.
  • Speed and efficiency: Experienced Sitecore developers can achieve 75% faster time to market. Their extensive knowledge of the Sitecore platform allows them to write clean, maintenance-friendly code that’s easy to upgrade or modify.
  • Customized, scalable solutions: Experienced Sitecore developers can customize features and adapt the platform to the business as it grows and evolves.
  • Reduced costs: Hiring an agency is much cheaper, especially in the long term, compared to hiring, training, and maintaining a specialized team of Sitecore developers in-house.
  • Frees up resources: Outsourcing Sitecore development will allow your team to work on other core aspects of your business.
  • Smoother operations: Agencies are adept at collaborating with third-party marketing and business providers, ensuring seamless operations and up to a 40% increase in performance.

NW Natural, a natural gas utility company, partnered with Sitecore development company Oshyn to help it upgrade to the latest Sitecore version. The agency had to create a stable DevOps environment to facilitate future upgrades and ensure the customer-facing website is optimized for performance.

After moving NW Natural to the more stable Kubernetes open-source cloud management platform, Oshyn reconfigured the company’s infrastructure for greater resource efficiency and implemented a CI/CD process for smoother automated releases. It also added a content delivery network (CDN) to boost performance and improve customer browsing experience.

These combined efforts have resulted in a 60% decrease in the release process, with the entire infrastructure taking up only two hours to be recreated. Using the CDN to cache media assets also reduced server load, improving website performance.

How do I choose the best Sitecore development company for my business?

To choose the best Sitecore development company for your business, follow these steps:

  1. Define your goals: Outline your project objectives, content management needs, website goals, and target audience.
  2. Set your budget: Determine a budget, including licensing, development, and maintenance fees.
  3. Research online: Use directories like DesignRush to find prospective service providers — filter by location, industry, and budget for more accurate results.
  4. Visit their website: Check for core services, specializations, portfolio, and team structure to understand their operations and culture.
  5. Look for experience: Request portfolios and case studies to assess their track record, especially in your industry.
  6. Check for certifications and awards: Certifications like Sitecore Systems Administrator and Sitecore Developer, as well as certified Sitecore Partner, indicate platform proficiency and resource access.
  7. Review client testimonials: Authentic reviews, such as those on DesignRush, provide insights into the agency's credibility and capability to deliver results.
  8. Create a shortlist: Choose developers whose services and culture align with your needs. Reach out, communicate your intentions, and schedule interviews.
  9. Send requests for proposals (RFPs): Clearly outline project goals, scope, timeline, features, functionalities, and other deliverables. Include an NDA for sensitive information.
  10. Check for compatibility: During the interview, assess their communication style, cultural fit, and understanding of your goals. If they're not a good match, consider other prospects.
  11. Choose a partner: Review all potential candidates and choose the company that best suits your specifications.

If you need help locating Sitecore development agencies that fit your needs, visit our Marketplace and briefly share your project requirements. We will connect you with suitable developers — free of charge.

How do I find the best Sitecore developer on DesignRush that fits my budget?

To find the best Sitecore developer on DesignRush that fits your budget, use our filter options and sort the agencies according to your minimal budget from lowest to highest.

If your budget is limited, you can opt for agencies that accept projects worth under $1,000.

Some of the best Sitecore developer firms that accept minimum budgets below $1,000 include

Be sure to inquire about rates from multiple developers to compare and negotiate a fair price.

What questions should I ask Sitecore developers before hiring one?

The questions you should ask Sitecore developers before hiring one include the following:

Its Relevant Background

  1. How long have you been working with the Sitecore platform?
  2. How familiar is your team with Sitecore workflows, indexing, analytics, and other key concepts?
  3. Does your team have Sitecore certifications or have relevant training courses?
  4. Have you had clients from the same industry as ours?
  5. Can you provide personalized service packages?
  6. Could you give a notable success story you’ve experienced with a client?

Its Services and Processes

  1. Which features do we need, and how will you integrate them?
  2. How will you help us migrate this data onto your system?
  3. What Sitecore features do you recommend, and how will you integrate them?
  4. What automation services do you offer?
  5. What type of data do you usually host on your servers?
  6. How do you set goals, and how do you plan to achieve them?

Related to Your Project

  1. How much data can we migrate?
  2. Can we customize our offering?
  3. What is the size and capacity of your servers?
  4. Will you have dedicated managers overseeing our project?
  5. How will you ensure that our data is safe?
  6. How will you be managing our data and processes?
  7. What reports and updates should we expect from you during the project?

What are the best Sitecore development companies in the US?

The best Sitecore development companies in the US are:

  • Bytes Technolab
    • 4.9 stars on DesignRush (14 reviews)
    • 4.8 stars on Google (4 reviews)
    • Top clients: Alliance Consumer Group, Healthy Planet Canada, WAZO, YID Cards
  • Oshyn
    • 5.0 stars on Google (2 reviews)
    • Top clients: NW Natural, Dole, Texas County & District Retirement System, Brandman University
  • Cerdonis Technologies
    • 5.0 stars on Google (1 review)
    • Top clients: Songy, Scoreboard, Deeds4Kids, Stylaaa
  • Zenesys
    • 4.5 stars on Google (52 reviews)
    • Top clients: HAVELLS, WSAVA, MAPPTRAP, ISG
  • Diffco
    • 4.9 stars on DesignRush (32 reviews)
    • 5.0 stars on Google (22 reviews)
    • Top clients: Multiverse, WYA, Food Rocket, Instreamatic