Apache OpenMeetings vs Microsoft Teams

Apache OpenMeetings is open-source groupware for video conferencing, instant messaging, whiteboards, and collaborative document work. Meeting participants can choose audio, video, audio-only, video-only, or picture-only modes, adjust quality and devices, record sessions for MP4 download, and share a desktop or window. Its multi-whiteboard supports drawing, writing, images, clip art, and imports such as PDF, DOC, ODT, and PPT. Conference rooms include a file explorer and shared public drive, while users have private drives. An integrated calendar handles invitations to internal or external attendees and emails meeting details. The project describes REST and SOAP APIs, LDAP/ADS connectors, VoIP/Asterisk modules, and plugins for Moodle, Drupal, and Joomla. OpenMeetings is free, with source and binary downloads; it is installed on a server and requires Java 21 and Kurento Media Server. The project lists a security fix in version 9.1.0 for an arbitrary file-read vulnerability affecting earlier versions from 5.0.0. Server setup requirements include a 2 GHz CPU and 4 GB RAM minimum under limited feature conditions, with 8 GB RAM recommended.

Microsoft Teams brings chat, channels, calls, meetings, and screen sharing together, with guest access and unlimited message history. People can join meetings as guests without a Teams account, and free users can sign in with an email address or phone number without a subscription. Free group meetings and calls last up to 60 minutes; one-to-one calls have no time limit. The free plan lists 100 participants and 5 GB of cloud storage. Teams runs on Android, iOS, Linux, macOS, Windows, and the web. Its listed integrations include Microsoft 365, SharePoint, OneDrive, Outlook, Exchange, Planner, Forms, Power BI, OneNote, Power Apps, Power Automate, and LinkedIn; Teams also has over 250 integrated business apps. Business plans support up to 300 users or people, include encryption for meetings, chats, calls, and files, and can include recordings and transcripts. Business plans list 1 TB per user for Business Basic and 10 GB per user for Teams Essentials. Essentials is $4 a year, billed at $4.00 per user/month, paid yearly; Business Basic is $7 a year, billed at $7.00 per user/month, paid yearly.