BorgBackup

Category: Communication & Business.

BSD-3-Clause☁️ Hosted only

draw.io

Category: Communication & Business.

Apache-2.0☁️ Hosted only

Calibre

Category: Communication & Business.

GPL-3.0☁️ Hosted only

Bruno

Category: Communication & Business.

MIT☁️ Hosted only

Godot Engine

Category: Communication & Business.

MIT☁️ Hosted only

Firefly III

Category: Communication & Business.

AGPL-3.0🖥️ Self-hostable

SuiteCRM

Category: Communication & Business.

AGPL-3.0🖥️ Self-hostable

Mailcow

Category: Communication & Business.

GPL-3.0🖥️ Self-hostable

Claws Mail

Category: Communication & Business.

GPL-3.0☁️ Hosted only

Mattermost

Category: Communication & Business.

AGPL-3.0🖥️ Self-hostable