Platform: <span>Linux</span>

I

InspIRCd GPL-2.0 IRC Linux Web v4.12.1 … ★ 1,361

E

Ergo MIT IRC Linux macOS v2.19.1 … ★ 3,357

L

Listmonk AGPL-3.0 Email Lists Linux macOS v7.0.0-beta.1 … ★ 24,153

S

Stalwart Mail Server AGPL-3.0 Email Servers Linux macOS v1.0.3 … ★ 15,733

M

Maddy Mail Server GPL-3.0 Email Servers Linux Web v0.9.6 … ★ 6,120

T

Tuwunel Apache-2.0 Messaging Linux Web v1.9.4 … ★ 2,735 SimpleX Chat Private messaging without user identifiers for people needing metadata-resistant chat AGPL-3.0 Messaging Android Linux v7.0.3 … ★ 19,644

R

RetroShare GPL-2.0 Messaging Linux macOS v0.6.7.2 … ★ 2,027 PushBits Send web API push notifications to Matrix users without another app. ISC Messaging Linux Web v0.10.7 … ★ 371

O

OTS Apache-2.0 Messaging Linux macOS v1.23.1 … ★ 810