MattermostCoordinate work through channels, messages and shared files.
Source published on GitHub under a custom/non-standard licence (GitHub shows no standard SPDX id); check terms for commercial use.
Notes, tasks & docs
Pumble
Free optionBrowser
Keep project chats, shared files and searchable message history in one business workspace.
What you can use it for
Keep project chats, shared files and searchable message history in one business workspace.
- Keep project chats, shared files and searchable message history in one business workspace.
Workflow coverage and comparison notes
Two or three business collaborators needing channel/DM project discussions searchable beyond 90 days within 10 GB shared storage and 3 third-party integrations. Slack Pro lists normal UK £7/user/month monthly or £5.75/user/month billed annually; temporary 50% introductory discount excluded. No claim of Slack Connect, group-meeting or integration parity.
Before you switch
Business/trade/professional use only under CAKE.com terms. Shared 10 GB capacity is not a monthly allowance. Group meetings and screen sharing require paid plans. Free exports cover public-channel messages/files/users; do not assume private-channel or DM export. Smaller integration ecosystem; vendor reserves the right to change free seat limits.
Alternatives to these paid apps
Each comparison covers the workflow described above, rather than every paid feature.
More for the same workflow
See alternatives →Mattermost
ZulipOrganise team conversations into streams and focused topic threads.
Free and open source (Apache-2.0 licence per GitHub).