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View Zextras Group's top competitors like Atmail, Citrix, and IceWarp.

Citrix
When we pioneered remote access, we believed people should be able to work anywhere and in any way they need. Three decades later, that’s even more true than ever. It’s what drives us to create technology that transcends the constraints of time, place, infrastructure, networks, and devices. And it’s the reason thousands of organizations around the world trust us to keep their apps available, their data safe, and their people productive—wherever and whenever work happens. Citrix is now part of Cloud Software Group. To learn more and see current career openings, visit cloud.com.
Fort Lauderdale, Florida, US
Public
$3.3B Revenue
https://www.citrix.com/
4.2K Employees
CTXS Ticker
Open-Xchange
Open-Xchange (OX) is a market leader of secure, open communication and office productivity software, email server software and DNS solutions, with hundreds of millions of users worldwide. As the leading independent email provider, we work with some of the world’s largest hosters, telcos and ISPs (including partners such as IONOS, KPN, Orange, Italiaonline, NTT, Softbank and TalkTalk), as well as public sector organizations. Our roots in open source have shaped our view of the world and culture – open, diverse, and with a bias to act, giving everyone at OX room to take responsibility within their team and grow. As a company, we believe in an internet that is open, safe and free, and create competitive products that allow our customers to deliver secure internet services with great user experience, and that respect privacy and generate value. With 230+ people worldwide, OX develops and operates open source software (aaS) for mail/messaging and collaboration/productivity. Dovecot is the world’s most popular IMAP server software, and PowerDNS provides secure DNS services to our customers and their users. Our business is fast-paced and changing constantly. We are always looking for people who share our vision, who want to make a difference, thrive in agile, non-hierarchical environments, and enjoy working in a high-tech environment as part of a truly international team. OX is headquartered in Cologne, Germany, with further offices in Hamburg, Nuremberg and Olpe), in addition to the USA (Palo Alto, CA, and New York, NY), Finland (Espoo), The Netherlands (The Hague), Italy (Turin), and Japan (Tokyo). If you're interested in joining OX, please visit: https://ox.io/careers
Köln, DE
Private
$32.4M Revenue
https://www.ox.io
199 Employees
Sync.com
At Sync we strive to help people do great things, which is exactly what it means to be in sync. Over 2.5 million individuals and businesses worldwide use our products to share big ideas, store important information, and collaborate on game changing projects — making the world a better place. To learn more about working at Sync, visit www.sync.com/careers
Toronto, CA
Private
$10.5M Revenue
https://www.sync.com
45 Employees
G2 Leader Summer 2026 G2 Best Est ROI Mid-Market Summer 2026 G2 Easiest Admin Mid-Market Summer 2026 G2 Most Implementable Summer 2026 G2 Best Results Mid-Market Summer 2026 G2 Lead Capture Mid-Market Summer 2026 Inc Fastest Growing Private Companies 2026 Inc Best Workplace 2026
g2crowd
G2Crowd Trusted
chromestore
300K+ Plugin Users