Mastodon
FreeDecentralized, open-source social network made of independently run servers that federate via ActivityPub. Chronological feeds, no ads, strong community moderation; mastodon.social is the flagship instance.
Bonus: install Mastodon from your browser
Are you the maker of Mastodon? Claim this listing →
More in Social & Communication
Community chat platform with text channels, voice rooms, video calls and screen sharing, fully usable in the browser. Free for core features; servers organize communities from gaming to study groups.
Team messaging organized in channels with threads, huddles for quick audio, and extensive app integrations. Free plan keeps 90 days of message history for small teams.
Full-featured web client for Telegram messaging: chats, channels, groups up to hundreds of thousands of members, file sharing up to 2 GB, bots and stickers, no phone app required once linked.
Client for the decentralized Matrix protocol: end-to-end encrypted chats and rooms, bridges to other networks, and self-hostable servers. The web app is free; hosting plans are optional.
Open-source video conferencing with no account and no time limit on the public instance: share a link and talk. Screen sharing, chat, and end-to-end encryption options included.
Browser-based video meetings in a personal room with a fixed URL — guests join without accounts or downloads. Free plan includes one room for meetings up to 45 minutes.