Syncthing seems right for you
Syncthing would work well for just syncing.
So would Seafile, for a more Google Drive-like experience.
So would NextCloud, for more of an extensible Google Drive+Apps experience that you can customize to your needs.
I second syncthing. I use obsidian. They want a fee to sync. I use syncthing for free. Obsidian is synced across a personal Linux laptop, personal Windows laptop, desktop, tablet, cell phone, and office laptop. Works well. I also use it to sync working files. I can leave my laptop in the office and still have convenient access from home.
Self-Hosted Main
A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.
For Example
- Service: Dropbox - Alternative: Nextcloud
- Service: Google Reader - Alternative: Tiny Tiny RSS
- Service: Blogger - Alternative: WordPress
We welcome posts that include suggestions for good self-hosted alternatives to popular online services, how they are better, or how they give back control of your data. Also include hints and tips for less technical readers.
Useful Lists
- Awesome-Selfhosted List of Software
- Awesome-Sysadmin List of Software