E-mail

• Account required: Yes
• IMAP: Yes
• POP3: Yes
• SMTP: Yes
• Shell access: Yes

Git

• Account required: Yes
• Bonus: CI/CD with Drone by Harness
• Shell access: Yes

Matrix

• Account required: Yes (invitation only)
• Shell access: No (by design)

Mumble

• Account required: No (everyone can use it)

Pleroma

• Account required: Yes (by administrator approval)
• Shell access: No

Sites

• Account required: Yes
• Gopher: Yes
• HTTP: Yes
• Shell access: Yes

Soju (IRC bouncer)

• Account required: Yes (invitation only)
• Shell access: No

XMPP

• Account required: Yes
• Shell access: Yes