Best Free Team Collaboration Tools

Calendly is the tool for connecting and scheduling meetings. The free plan provides 1 Calendar connection per user and Unlimited sessions. Desktop and Mobile apps are also offered. When we read the page we cite for this offer on 2026-10-20, we found a change we could not reconcile with the terms we publish, and we have read it again since, on 2026-11-11, without confirming them, so we cannot confirm these terms today.

• −1 stale_verification We cannot confirm this offer: 1 consecutive re-check attempt has failed (most recently 2026-11-11 — The pricing page text does not include any plan tiers, pricing details, or free plan limits (e.g., calendar connections, session limits), so the stored free-tier info cannot be verified.), never confirmed since it was indexed. This is our inability to verify, not a change by the vendor. (a limit of ours, not a change by the vendor)

Chanty is another alternative to Slack. It has a free forever plan for small teams (up to 5) with unlimited public and private conversations, searchable history, unlimited 1:1 audio calls, unlimited voice messages, ten integrations, and 20 GB storage per team.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-10-25, found the page different from the terms we hold. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Secure Video and Web conferencing add-ons available. The free plan is limited to 40 minutes. The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-11, so we cannot confirm these terms today.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-10-11, could read no amount, tier or rate on the page. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Real-time collaboration infrastructure — Free tier includes: Unlimited MAU, Unlimited monthly active rooms, 3,000 realtime collaboration minutes, 200 comments, 1 GB realtime data storage, 512 MB file storage, 3 dashboard seats, 10 projects. Note — effective between 2026-04-11 and 2026-06-07: The free plan dropped its cap of 500 monthly active rooms and raised realtime data storage from 256 MB to 1 GB, and added two metered limits: 3,000 realtime collaboration minutes and 3 million realtime data storage updates a month. Source ↗

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-11-12, found the page different from the terms we hold. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Talk and collaborate in real time with your team. Pair programming with IDE, terminal sharing, voice, video, and screen sharing. Free for small teams. The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-24, so we cannot confirm these terms today.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-10-24, could read no amount, tier or rate on the page. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

A faster way for your team to communicate. Free Unlimited Messages, Channels, Users, Apps & Integrations. The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-10, so we cannot confirm these terms today.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-10-10, could read no amount, tier or rate on the page. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Real-time chat with a unique email-like threading model. The free plan includes 10,000 messages of search history and File storage up to 5 GB. also, it provides a self-hostable open-source version. The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-09, so we cannot confirm these terms today.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-10-09, could read no amount, tier or rate on the page. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Free screen sharing tool, share your screen with collabrators right from your browser, no download or registration needed. For free. The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-11, so we cannot confirm these terms today.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-10-11, could read no amount, tier or rate on the page. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Free group video chat. Anonymous. Peer‑to‑peer. No plugins, signup, or payment required. The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-11, so we cannot confirm these terms today.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-10-11, could read no amount, tier or rate on the page. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

A decentralized and open-source communication tool built on Matrix. Group chats, direct messaging, encrypted file transfers, voice and video chats, and easy integration with other services. The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-10, so we cannot confirm these terms today.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-10-10, could read no amount, tier or rate on the page. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Interactive customizable spaces for team meetings & happy hours socials. The Free plan is $0 forever for up to 5 people at once, with unlimited session length, spatial audio and video rooms, your own maps and an embed button for your site.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-11-04, found the page different from the terms we hold. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Real time collaboration & writing tool for markdown format docs/files. Like Google Docs but for markdown files. Free unlimited number of "notes", but the number of collaborators (invitee) for private notes & template [will be limited](https://hackmd.io/pricing).

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-11-04, found a change we then refused to record, because it restated the terms we already publish. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Daily reports of your team's Commit and Pull Request activity on GitHub. Includes Push visualizer, peer recognition system, and custom alert builder. The free tier has unlimited users, three repos, and 3 alert configs. When we last read the page we cite for this offer, on 2026-10-26, we reached a domain root that states nothing about the terms we hold, so we cannot confirm these terms today.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-10-26, reached a domain root that states nothing about the terms we hold. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Keybase is a FOSS alternative to Slack; it keeps everyone's chats and files safe, from families to communities to companies. The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-11, so we cannot confirm these terms today.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-10-11, could read no amount, tier or rate on the page. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

A lightweight and collaborative wiki for all your team's knowledge, docs, and notes. Free plan with all essential features, up to 50 items, and 5GB storage. The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-11, so we cannot confirm these terms today.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-10-11, could read no amount, tier or rate on the page. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

One-click video conversations, and screen sharing, for free. The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-11, so we cannot confirm these terms today.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-10-11, could read no amount, tier or rate on the page. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Video meetings with a free plan offering 40 minutes per meeting with 100 attendees. The page we cite for Webex names a plan but states no amount, so these limits come from our own record rather than from that page.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-10-26, could read no amount, tier or rate on the page. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Tencent Real-Time Communication (TRTC) offers solutions for group audio/video calls.10,000 free minutes/month for the first year.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-11-01, found the same terms as an earlier read we had declined to record. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Find the perfect time and date for a meeting. Simple to use, works great for small and large groups. The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-10, so we cannot confirm these terms today.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-10-10, could read no amount, tier or rate on the page. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Chat, for GitHub. Unlimited public and private rooms, free for teams of up to 25. The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-10, so we cannot confirm these terms today.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-10-10, could read no amount, tier or rate on the page. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Team Collaboration free for 25 users with three groups, three custom apps, 3 Boards, 3 Manuals, and 10 Integrations along with channels, events & forums. The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-10, so we cannot confirm these terms today.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-10-10, could read no amount, tier or rate on the page. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Now Stoat — revolt.chat redirects to stoat.chat, which serves the same product. Open-source group chat and Discord alternative: servers, channels, voice chat, file sharing, markdown, role-based permissions and moderation tools. Free; no ads and no data mining. Windows, macOS, Linux, Android, iOS and web. The page we cite for this offer does not name it when we last looked, on 2026-11-09, so we cannot confirm these terms today.

• −1 stale_verification We cannot confirm this offer: 5 consecutive re-check attempts have failed (most recently 2026-11-09 — the page never names Revolt.chat and is not served from its domain), never confirmed since it was indexed. This is our inability to verify, not a change by the vendor. (a limit of ours, not a change by the vendor)

Open-source communication platform with Omnichannel features, Matrix Federation, Bridge with others apps, Unlimited messaging, and Full messaging history. The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-11, so we cannot confirm these terms today.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-10-11, could read no amount, tier or rate on the page. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Visual collaboration app used for brainstorming, content curation, and notes. No free plan since Stickies dropped its Free Forever plan between 2026-08-28 and 2026-09-26. Plus is $5/month billed annually and Pro $10/month, each with a 14-day free trial and no credit card required. Note — discovered 2026-09-26: Stickies dropped its Free Forever plan between 2026-08-28 and 2026-09-26. It now sells Plus ($5 a month billed annually, $7 monthly) and Pro ($10 a month billed annually), with a 14-day free trial. Source ↗

• −3 free_tier_withdrawn Recorded free tier removal on 2026-09-26: Stickies dropped its Free Forever plan between 2026-08-28 and 2026-09-26. It now sells Plus ($5 a month billed annually, $7 monthly) and Pro ($10 a month billed annually), with a 14-day free trial. Source: https://stickies.app/pricing/
• −2 time_limited_offer Tier "Trial" is a trial that expires, not an ongoing free tier.