Zulip
Open-source · self-hostable · replaces 1 SaaS tool on os-alt
zulip/zulip · alive · ★ 25.2k · last commit today · 2054 open issues
License: Apache-2.0
Good fit for Async teams that hate Slack's flat-channel firehose.
Weak at Cultural shift to topic-threaded chat is the actual blocker, not setup.
In a terminal? npx -y github:SolvoHQ/os-alt-cli slack prints
the Slack comparison table including Zulip.
how the CLI works →
Replaces these SaaS
- Slack · Team chat
Use the upstream `manage.py convert_slack_data` against a Slack export. Topic-threaded model means channels translate but conversations get re-bucketed; warn users that the topic discipline is a real change.
README badges for the SaaS this replaces
Maintainers and forks: drop a badge in your README to link readers from the SaaS-comparison page back to your repo.