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.
United States × B2B Sales Outsourcing × HR × Sort by: Organic Rankings ×Clear Filters
Founded in 2004 and headquartered in Encino, California, Callbox Inc. is a global leader in outsourced B2B lead generation, appointment setting, and event marketing. With over 20 years of experience and a multilingual team servicing APAC, LATAM, and EMEA, the agency supports medium-sized businesses to...
Top Services:
Managed Services
Cloud Consulting
Digital Marketing
ERP Consulting
CRM Consulting
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Location
Los Angeles, California
Number of Employees
500 - 999
Portfolios Count
100 Projects Listed
Callbox Services
Managed Services
Cloud Consulting
Digital Marketing
ERP Consulting
CRM Consulting
BPO
Event Marketing
SEO
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Amazon
Google
Microsoft
Workday
SAP
Telefonica
Zendesk
opentext
Yandex
NEC
Data sourced from the agency's DesignRush profile
Callbox Reviews & Testimonials
Joachim Fong Regional Marketing Specialist at Malvern Panalytical
5.0★
Lead Generation Review from Joachim Fong
For the past year, Callbox has provided us with satisfactory lead generating and lead nurturing services. They were instrumental in securing attendees for our events, scheduling client appointments and facilitating the sale of one of our benchtop systems. Their professionalism in conveying our product attributes and valued solutions to prospective customers has brought us results.
Jonathan Anderson Owner at ABS
5.0★
Lead Generation Review from Jonathan Anderson
I’ve used Callbox now for about four months for my internet marketing company. The first two months they did not pay off. However with some additional training on my part, they started to close a higher percentage of my target audience. They’re really smart, nice and are really working hard to keep my business. My dedicated team keeps me up-to-date through frequent communications. My R.O.I is getting stronger and my CPA is starting to drop.
Ted Calvin Co-Founder & Vice President at Charted Energy
5.0★
Appointment Setting Review from Ted Calvin
Charted Energy has enjoyed a productive relationship with Callbox. They have done a great job of helping us target prospects within the markets we serve as well as qualify leads and set up appointments with decision-makers. Callbox has generally exceeded the number of leads per week we expected and provides a good value by enabling our inside sales team.
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Scalemill runs human-first, AI-enabled SDR teams for B2B SaaS companies, handling appointment setting, outbound lead generation, customer support, customer success, and sales operations across 20+ countries...
Top Services:
Customer Support
Location
Sheridan, Wyoming
Number of Employees
100 - 249
Scalemill Services
Customer Support
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Payoneer
Payactiv
Dagsmejan
NINJIO
Workhy
Chowmill
Genimex
Mperativ
USA Energy
Avibra
Data sourced from the agency's DesignRush profile
Scalemill Reviews & Testimonials
Mustafa Nemat Ali Undisclosed at Undisclosed
5.0★
Customer Support Review from Mustafa Nemat Ali
One-stop shop for B2B SaaS companies that are looking for inside sales, customer success and support solutions.
Hammad Hussain Treasurer at MD Caterwings UK
5.0★
Customer Support Review from Hammad Hussain
The team did a great job booking lunch & learn sessions for us. More than 90% of the scheduled meetings ended up taking place and we converted most into opportunities... Very satisfied.
Michael Ambros CEO at eKomi
5.0★
Customer Support Review from Michael Ambros
Scalemill really helped us with appointment-setting through cold outbound prospecting at a much lower cost than here in Germany. Their team is highly trained in not just sales but also tech.
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Dedicated remote teams from India, starting at $5/hour. 500+ pre-vetted professionals. Operated by LegelpTech Outsourcing Pvt Ltd (ISO 27001:2022 certified). 5-day risk-free trial. 48-hour shortlist. Founded 2021 by Ashu Mishra & Chandra Prakash. Serving SMB and mid-market clients globally...
Top Services:
Staff Augmentation
Cybersecurity
Accounting
Customer Support
IT Services
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Location
Cheyenne, Wyoming
Number of Employees
250 - 499
Average Hourly Rate
$5/hr
Minimal Budget
Under $1,000
Zedtreeo Services
Staff Augmentation
Cybersecurity
Accounting
Customer Support
IT Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
NDA Bound
NA
NDA
Data sourced from the agency's DesignRush profile
Zedtreeo Reviews & Testimonials
Muhammad Anas Asghar Manager at Everest Moving
5.0★
IT Services Review from Muhammad Anas Asghar
The greatest benefit to us was the lack of a need to take someone from the ground up. Our expert was familiar with AI workflows and recommended a few improvements that streamlined our day-to-day tasks.
Muzamil shah CO Manager at Howards Van line
5.0★
IT Services Review from Muzamil shah
Unlike a traditional freelancer platform, where you must search through hundreds of profiles, Zedtreeo is different. They provided us with a pre-selected short list and these candidates had already been tested. This saved us hours that it would have taken and made the decision easier.
Saqib Jalil General Manager at Sinatra Moving Group
5.0★
IT Services Review from Saqib Jalil
Thanks to Zedtreeo's work, the client improved lead quality, streamlined their sales process, and enhanced reporting accuracy. The team managed the project professionally, communicated clearly, and delivered milestones on time. Zedtreeo was responsive to requirements and adapted to feedback.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
Invensis Technologies Achieves 80% Payment Recovery Improvement for US Healthcare Client Through AI-
Invensis Technologies Achieves 80% Payment Recovery Improvement for US Healthcare Client Through AI-Human Parallel Processing Model...
Top Services:
Call Centers
Accounting
Logistics
Phone Answering Services
Customer Support
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Location
Lewisville, Texas
Number of Employees
1000 & Up
Portfolios Count
4 Projects Listed
Invensis Services
Call Centers
Accounting
Logistics
Phone Answering Services
Customer Support
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Philips
Trend West
GRM
Data sourced from the agency's DesignRush profile
Invensis Reviews & Testimonials
Sundar Kasyap Review from Google
5.0★
Sundar Kasyap's Review Sourced from Google
Our small clinic in Texas was struggling with billing and insurance claims. Invensis’ Revenue Cycle Management services turned that around quickly. Claims are processed faster, and denials have decreased. They're professional, easy to work with, and understand the U.S. healthcare system inside out.
Prem Kumar Review from Google
5.0★
Prem Kumar's Review Sourced from Google
We partnered with Invensis Inc for eCommerce support, and it's been a game-changer. Our order processing, returns, and customer service have become faster and more accurate. The team is responsive, US-business savvy, and really understands online retail. Highly recommend for any U.S.-based business looking to streamline operations.
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Treemont Consulting is your trusted partner in success. Our team of experts provides valuable B2B solutions to help you reach new heights. Let us work with you every step of the way, delivering leads and ensuring continued growth...
Top Services:
Digital Marketing
Call Centers
Email Marketing
Location
Austin, Texas
Number of Employees
Under 49
Minimal Budget
$1,000 - $10,000
Treemont Consulting Services
Digital Marketing
Call Centers
Email Marketing
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
A global customer experience (CX) management solutions provider, Startek delivers best-in-class omnichannel CX, digital transformation, virtual receptionist, call and contact center, and enterprise tech services for leading brands, from Fortune 500s to fast-growing startups...
Top Services:
BPO
Call Centers
Location
Greenwood Village, Colorado
Number of Employees
1000 & Up
Average Hourly Rate
$25/hr
Minimal Budget
$1,000 - $10,000
STARTEK Services
BPO
Call Centers
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Flair Airlines
Telkom
Mercedes-Benz
Data sourced from the agency's DesignRush profile
STARTEK Reviews & Testimonials
Karina Thompson Review from Google
1.0★
Karina Thompson's Review Sourced from Google
Startek is the worst. They provide tech support for other companies... And they never seem to know what is going on. Poorly trained.
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IT Advisors Online (ITAdOn) is a growing team of technology experts who are passionate about helping companies like yours boost their effectiveness. Join ITAdOn today and grow your business. When you succeed, we succeed!...
Top Services:
IT Services
Managed Services
HR Outsourcing
UI/UX Design
IT Compliance Solution
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Location
Philadelphia, Pennsylvania
Number of Employees
Under 49
Average Hourly Rate
$10/hr
Minimal Budget
Under $1,000
Portfolios Count
1 Project Listed
ITAdOn IT Solutions Services
IT Services
Managed Services
HR Outsourcing
UI/UX Design
IT Compliance Solution
Cybersecurity
Cloud Consulting
Phone Answering Services
Staff Augmentation
CRM Consulting
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
IT Industry
Staffing Industry
Standard Technology
Data sourced from the agency's DesignRush profile
ITAdOn IT Solutions Reviews & Testimonials
Riel Review from Google
5.0★
Riel's Review Sourced from Google
I've had my ups and downs hiring various IT professionals to assist in our tech operations. A trusted friend recommended this firm, and since then, I haven't looked back. Dealing with ITAdOn has been delightful; they have been our most reliable partner so far, and no provider I've ever hired has come close in terms of responsiveness, accountability, and professionalism.I've achieved great results with them, receiving fantastic IT support and meeting our recruiting needs. Huge thanks to the ITAdOn team for helping us scale our business.
Donald Romeo Review from Google
5.0★
Donald Romeo's Review Sourced from Google
I have been very satisfied with the IT Support we have received from ITAdOn. ITAdOn has helped us build a secure IT infrastructure that gives us peace of mind (especially where there are a lot of cybersecurity and ransomware risks nowadays). Every staff member is very competent, responsive, and easy to work with. They treat us like their own and do whatever it takes to properly get the job done. The team members at ITAdOn are truly the professionals you want on your team helping you out when your technology snags an issue. Knowing I can rely on them, they are our go-to IT support company here in Philadelphia! I highly recommend them.
Cameron Anchondo Review from Google
5.0★
Cameron Anchondo's Review Sourced from Google
ITAdOn has been managing our IT infrastructure for the last few months and we couldn’t be happier. The technical support team is very responsive and extremely knowledgeable. I feel great that our network, server, and our workstations are up to date and running smoothly. They recently upgraded our workstations to Windows 11 which was effortless on our end and everything is working seamlessly. Very happy with their service.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
From individuals and entrepreneurs, small and medium-sized businesses, right through to large corporations and government bodies, our administrative assistants are helping our clients become more efficient by streamlining their processes...
Top Services:
Customer Support
BPO
Market Research
Transcription Services
Translation Services
Show more
Location
New York City, New York
Number of Employees
250 - 499
Average Hourly Rate
$24/hr
SmartPA Services
Customer Support
BPO
Market Research
Transcription Services
Translation Services
HR Outsourcing
Call Centers
Accounting
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Cox-London
Complete Refinish
Collette CWMedia
Krispy Kreme
Total Oil and Gas
Data sourced from the agency's DesignRush profile
SmartPA Reviews & Testimonials
Vicky Grobbelaar Review from Google
5.0★
Vicky Grobbelaar's Review Sourced from Google
Mandy has been a huge asset to Ethiqs and a lovely person to work with, efficient and friendly and a great team backing her. Highly recommended.
Pedro Mendoza Review from Google
5.0★
Pedro Mendoza's Review Sourced from Google
Holly has been a great help recently both in terms of my business and personal affairs. I am in the process of making some business structure changes in my private dental practice and she has assisted me with all the lengthy paperwork, ensuring that everything is in order. In addition, she has assisted me in researching properties and locations. I would not hesitate in recommending her services as her support has been invaluable to me at this extremely busy time and has allowed me to focus on my patients.Highly recommended +++++
Alexandra Stewart Review from Google
5.0★
Alexandra Stewart's Review Sourced from Google
Terri has been an incredible SmartPA assistant for our family over the past 18 months. Her support has been invaluable in managing our busy work and home administrative tasks. Throughout our travels across Europe, the US, and Canada, as well as during our recent move to a new house and country, Terri has been there for us every step of the way. In particular, I have appreciated that Terri has used great judgment in assessing options on all fronts and hasn't just gone for the easy road of blindly following orders. I have trusted her as a "second me" and that has been so helpful. We couldn't have done any of this without her!
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At Message Center, Inc., we tailor service and agent training to meet your unique requirements, offering competitive rates and ensuring our staff handles your customers with professionalism and reliability. With our receptionists on hand, you'll never miss a chance to engage with potential customers, whether...
Top Services:
Call Centers
Phone Answering Services
Location
Millville, New Jersey
Number of Employees
Under 49
Minimal Budget
Under $1,000
A Message Center, Inc Services
Call Centers
Phone Answering Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Specialized, affordable 24/7 phone answering services using a combination of friendly, articulate agents, exceptional training and premium technology to work for your business...
Top Services:
Phone Answering Services
Location
Bloomington, Minnesota
Number of Employees
Under 49
Elation Services
Phone Answering Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Medical Industry
Real Estate Industry
Legal Industry
Data sourced from the agency's DesignRush profile
Elation Reviews & Testimonials
NewPatient Registration Review from Google
5.0★
NewPatient Registration's Review Sourced from Google
We have used Elations Answering Service for our Family Practice after hours service for many years. We have been very happy with their service. They are always courteous with our patients, and thorough is determining their needs. They are also very flexible with changes in our schedule and assisting with any questions we have.
FNA OPE1 Review from Google
5.0★
FNA OPE1's Review Sourced from Google
Our company has utilized Elation Answering Service for several years now. Our process is complicated and our script has been challenging over the years to include international support. Through it all the managers have worked tirelessly to ensure that they handle everything as requested. Even the representatives are amazing at adjusting the script while speaking with them to make sure they get the correct individual to take a call. This has been the best decision for our company in providing 24 hour support to our customers.
Mackenzie Muldowney Review from Google
5.0★
Mackenzie Muldowney's Review Sourced from Google
Our outpatient behavioral health practice has utilized Elation Answering Service for close to 4 years. Throughout that time, Elation has handled our needs efficiently and effectively, even in the face of a worldwide pandemic. Our account manager, Jenny Clark, has been hands on all the way, and always prompt to answer our questions/make edits to our call schedules and rosters on the fly. Our clinicians, staff, and patients have all benefited from the support of this service.
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Virtual Mojoe is a one-stop solution to hiring the best virtual assistants online, who help you with all those mundane and daunting tasks so that you can achieve more by doing less and what matters most!...
Top Services:
BPO
Location
Las Vegas, Nevada
Number of Employees
100 - 249
Average Hourly Rate
$10/hr
Minimal Budget
Under $1,000
Virtual Mojoe Services
BPO
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Cyber Hospitality LLC is your go-to IT partner for comprehensive solutions in IT services, software development, digital marketing, hotel management, business process outsourcing, and accounting. We provide cutting-edge technology solutions to boost your business's online presence and operational efficiency...
Top Services:
Digital Marketing
SEO
BPO
Location
Sheridan, Wyoming
Number of Employees
Under 49
Average Hourly Rate
$15/hr
Minimal Budget
Under $1,000
Cyber Hospitality Services
Digital Marketing
SEO
BPO
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Microsoft
We4HR
Bluegrey Technologies India Private Limited
Shift4
Data sourced from the agency's DesignRush profile
Cyber Hospitality Reviews & Testimonials
Mark Review from Google
5.0★
Mark's Review Sourced from Google
Had a problem completing sign in to a hotel's wifi. Management contacted Cyber Hospitality LLC and suggested I call them as well. The tech professional at Cyber Hospitality was polite and helpful, resolved the issue and gave me a call back, all within about 10 minutes. Very satisfied with their service
Syed Junaid Abbas Review from Google
5.0★
Syed Junaid Abbas's Review Sourced from Google
I would highly recommend this company as a client. I'm happy with the services they provide
Hemang Patel Review from Google
5.0★
Hemang Patel's Review Sourced from Google
Cyber WiFi team is very knowledgeable, responsive and easy to work with for staff and guests. I would highly recommend.
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For more than 30 years, SERVICE 800 has been designing programs and providing resources to measure Customer Experience every day. The SERVICE 800 methodology delivers the accurate metrics you need to build and measure an effective customer journey map. SERVICE 800 programs reveal the actions and behaviors...
Top Services:
Call Centers
Market Research
Location
Minnetonka, Minnesota
Number of Employees
250 - 499
Service 800 Services
Call Centers
Market Research
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Scale Your Business With Quality Outsourced Teams In Back Office Support.
RPM stands out as a comprehensive solution provider, offering bilingual expertise in both English and Spanish, with the flexibility to provide full-time or part-time dedicated resources, fully managed to meet diverse operational needs. Our capabilities span a wide spectrum, encompassing intricate back-office...
Top Services:
BPO
Customer Support
Call Centers
Staff Augmentation
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Location
San Jose, California
Number of Employees
100 - 249
Minimal Budget
Under $1,000
RPM Services
BPO
Customer Support
Call Centers
Staff Augmentation
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
1840 & Company is a global provider of talent and team solutions devoted to empowering businesses with scalable, on-demand workforce solutions. With a stringent verification procedure and a network of professionals in 150 countries, we connect organizations with remote talent of the highest caliber. Our...
Top Services:
BPO
Staff Augmentation
HR Outsourcing
Customer Support
Call Centers
Show more
Location
Overland Park, Kansas
Number of Employees
500 - 999
Average Hourly Rate
$10/hr
Minimal Budget
$10,000 - $25,000
1840 & Company Services
BPO
Staff Augmentation
HR Outsourcing
Customer Support
Call Centers
Transcription Services
Translation Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Groupon
Isango
Instacart
HomeLight
LearnZillion
Data sourced from the agency's DesignRush profile
1840 & Company Reviews & Testimonials
carmen noche Review from Google
5.0★
carmen noche's Review Sourced from Google
It was a very productive and swift process. Starting from the interview, to assessments. Everyone was punctual and need not wait for a week or so for updates. They give updates immediately no need for the long wait and suspense. Keep it Up!!
lucille Mrrs Review from Google
5.0★
lucille Mrrs's Review Sourced from Google
My experience with 1840 & Company’s recruitment process has been excellent from start to finish. The team was professional, responsive, and supportive throughout every step. Communication was always clear, and I truly appreciated how smooth and organized the process was. I felt valued as a candidate, and I’m very excited to officially join as a Patient Support-CSR. Thank you to the team for making this such a positive experience!
Andrea Yáñez Review from Google
5.0★
Andrea Yáñez's Review Sourced from Google
I had a truly outstanding experience with 1840&Co throughout the entire recruitment process. From the very beginning, their team demonstrated professionalism, clear communication, and genuine care. What stood out most was the consistent follow-up—they kept me informed at every step, making the process feel smooth and well-organized. I always felt supported and valued as a candidate. I’m incredibly happy to share that I’ve been offered a new role, and I couldn’t be more grateful to the 1840&Co team for making it all possible.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
4.7
4.7