- Available on NonGNU Elpa and MELPA
- Supports Emacs >= 27.1
- recently updated (new maintainer)
- annotation ranges supported (may make integration with private_comments more complex)
- comments entered in minibuffer.
- tied to its own database format
- displays annotations on right side of window.
- Threw timer errors when I used it.
- Heavier code base (more than we need?).
- Available on MELPA
- Supports Emacs >= 26.1
- Recently updated (active)
- 1 line = 1 comment
- comments entered in minibuffer.
- Tied to own storage format.
- Source code quality is fair (not a lot of documentation).
- not distributed on any ELPA
- Supports Emacs >= 24.1
- depends on (orphaned package) popwin
- updated less often
- comments entered in buffer
- “experimental” comment persistence format
- Poorest code quality of the three. Does not have proper package header, no lexical binding enabled, etc