Drilldown: tool
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Commercial/Government/Defense tiers are custom-priced (free self-hosted Community
edition available) (1) ·
Free, no ads, no paid tiers. Run by the Signal Foundation, a US 501(c)(3) nonprofit
funded by grants and donations; by charter it cannot be acquired. (1) ·
Self-hosted is free (single user/accountant); Cloud-hosted plans $12-218/mo (1)
source license:
hosting:
description:
End-to-end encrypted 1:1 and group messaging, plus voice/video calls, built on
the audited Signal Protocol (Double Ratchet + X3DH). ~40M monthly users. Registration
requires a phone number; usernames (added 2024) let you start chats without sharing it. (1) ·
MIT-licensed, self-hostable team chat with channels, voice/video, and broad
integration support. Its omnichannel inbox unifies live chat, email, WhatsApp, and
Telegram into one agent queue -- useful if you also want to replace a separate
customer-support tool, not just internal chat. (1) ·
Self-hostable double-entry accounting: invoicing, online payments, expense tracking,
multi-currency, unlimited bank/cash accounts. The free self-hosted tier is limited to one
user and one accountant -- fine for a single bookkeeper, not for a team that needs
shared access. (1)
usage notes:
None (1) ·
Even the self-hosted install requires an API key that calls home to
Akaunting's servers to validate your license tier -- worth knowing if full data
sovereignty (no external dependency at all) is a hard requirement, since this isn't
quite that despite being open source. (1) ·
Has the most GitHub momentum of the self-hosted Slack alternatives
(~45k stars). The free Community edition covers most day-to-day needs; exceeding
Starter-plan limits blocks adding new users but does not lock you out of existing
data. (1)
rejected alternatives:
category:
Showing below up to 3 results in range #1 to #3.