Top 100 Call Center Services

TELUS International is a BPO contact center headquartered in Sofia, Bulgaria. They also have offices in Bucharest, Romania, and Old Trafford, United Kingdom. Founded in 2004, they have about 1,092 employees that serve clients in the financial, gaming, and IT industries. They specialize in voice services.

Otava (formerly NewCloud Networks) is a cloud services provider based in Englewood, CO. They were founded in 1988 and have a team of 41 employees. They specialize in cloud consulting, IT managed services, and cyber security for enterprise and midmarket clients in the financial services, healthcare, and IT industries. 

Green Leads LLC is a telephone answering service located in Hampstead, New Hampshire. The agency offers voice services, email marketing, and content marketing and has a small team.The agency was founded in 2007.

Call center RND Softech is located in Coimbatore, India. The large team focuses on call center services, IT managed services, custom software development, back office outsourcing, and more and was established in 1999.

Pearl Lemon is a London based digital strategy agency that was founded in 2016. Their team of 13 employees specializes in SEO, email marketing, and social media marketing. 

Intelligent Office is a business process outsourcing firm based in Denver with offices in Washington, DC, London, and Canada. Established in 2010, their team has grown to 300 employees. Intelligent Office offers a wide range of outsourced operations solutions. The bulk of their services consists of voice BPO, including inbound calls and customer support; they also offer non-voice services, such as live chat and virtual assistant solutions.

A leading global BPO company with 45 employees, Staff Outsourcing Solutions embodies the principles of customer advocacy and efficiency. The company is based out of Cebu City, Philippines and collaborates with clients across industries from consumer products, financial services, healthcare, and retail to telecommunications. Founded in 2011, Staff Outsourcing Solutions specializes in voice services, non-voice BPO/back office services, and HR consulting.

Founded in 2011, LMNts Marketing is a freelancer based in Frodsham, United Kingdom. They provide marketing strategy, advertising, and branding services to clients. 

Freelancer Aid is a marketing firm founded in Dhaka, Bangladesh in 2016 with fewer than 50 members. They specialize in back-office services, market research, and email marketing solutions for clients in the industries of advertising, business services, and IT.

Digital Jockey is a digital agency in Jamshedpur, India. Founded in 2018, they have about 5 employees that serve small-business and midmarket clients in the advertising, manufacturing, and education sectors. Services include social media marketing, PPC, and voice services.

A&N Sales Services Pvt. Ltd., a sales outsourcing company, was established in 2022. They are based in नवी मुंबई, India and have a small team. Their services include sales outsourcing, market research, and business consulting.

Gabtech Global LLC is a customer service outsourcing company. Founded in 2009, the midsize agency is in Peoria, Arizona. Their team focuses on customer service outsourcing, HR services, call center services, IT staff augmentation, and more.

Paramedium Group is a market research company. They are based in Bayrut, Lebanon; İstanbul, Turkey; Kuwait City, Kuwait and Riyadh, Saudi Arabia and have a small team. Their services include market research, business consulting, HR services, back office outsourcing, and more. The agency was established in 2016.

Quality Contact Solutions is a call center solutions provider based in Aurora, Neb. that was established in 2007. Their team of more than 25 employees offers B2B telemarketing sales, B2C outsourced calls, QA, and call consulting.

Leads at Scale is an answering service launched in 2013. They are located in Spokane, Washington and have a small team. The agency offers voice services and non-voice bpo/back office services.

RDI Corporation is a telephone answering service. The large Cincinnati, Ohio-based company was established in 1978. Their team offers voice services, IT managed services, market research, and non-voice bpo/back office services.

Established in 2019, Passion4Growth is an answering service and business consulting company. They are located in Breznik, Bulgaria and have a small team. The company focuses on voice services and business consulting.

SalesPro Leads is a Reno, Nev. based lead generation firm that was founded in 2012. Their team of 20 specializes in voice services, email marketing, and event marketing and event planning.

Westpark Communications is a business process outsourcing firm based in Houston, Texas. Established in 1968, the team of about 40 employees primarily provides voice services and non-voice BPO and back office services for the manufacturing, retail, and business services industries.

LessLeads is a sales outsourcing company founded in 2021. They are headquartered in King of Prussia, Pennsylvania and have a small team. The firm focuses on sales outsourcing.

Sales outsourcing company Done For You Meetings is based in Ellijay, Georgia. The small company was established in 2015. Their services include sales outsourcing, other marketing, and other digital marketing.

Founded in 2014, Symbiont Group is a digital marketing and sales agency. Symbiont's Chicago-based team of 15 offers mostly mid-size clients a combination of services in the areas of SEO, web design, email and content marketing, and marketing strategy.

Leadable is a digital advertising agency founded in 2019 in Dublin. With a team of 10+ members, they provide voice services as well as direct marketing and content marketing to small businesses in the IT and advertising industries.

Alert Communications is an answering service. Their midsize team is located in Camarillo, California. Their services include voice services. The firm was established in 1965.

In Las Vegas, Nevada, Insurance Telemarketer is a small non-voice bpo/back office services and phone answering service. The team focuses on non-voice bpo/back office services and voice services.