TypeFire
TypeFire is a free Mac app that does three jobs I used to pay three subscriptions for: a text expander, a clipboard manager, and markdown notes. Each one opens over the app you're in, so you never switch windows to use it.
Snippets: type a short abbreviation and the full text lands in any app or website. Tokens fill in the date, the clipboard, or a form you answer as it expands. Unlimited, free.
Clips: macOS keeps one thing you copied. TypeFire keeps the rest, searchable behind a shortcut, including the text inside screenshots.
Notes: point it at a folder you already have, an Obsidian vault included, and it edits those markdown files in place. Wikilinks, tables, quick capture from any app, and a graph of how your notes connect.
Highlight text in any app and rewrite or translate it where it sits, on Apple Intelligence or your own API key. Sync runs through your own iCloud Drive. A free Chrome extension carries your snippets to Windows, Linux and ChromeOS. Pro is $18 once, no subscription.