No lock-in - criteria

Posted by maties
Mar 11, 2014 at 11:56 AM

which software satisfy the criteria?

2 general thoughts
-software must not lock-in….
-avoiding/minimizing new problems in the future….

must:
all platforms (Windows, MacOS, Linux) and (mobile os (optional))
open source (GPL)
open data formats (storing, import, export)
free to use
full control over your data (no registration required and no cloud, just cloud-optional)
integrated backup (local, online optional)
list-view of all data (type, name, created, changed, keywords, backup-status .....)
synchronization between desktops (and mobile-devices)
powersearch functions (intelligent ranking like Devonthink, CT)
note-taking (both: classic rtf-notes and free-form like OneNote, Circus Ponies Notebook)
data visualization (concept-data-mapping)
auto-tagging (intelligent content recognition like Devonthink, CT, Circus Ponies Multidex)
manual-tagging
pdf-annotation (no lock-in), exportable

Great software, but it is a lock-in:
( qiqqa (win-only), connectedtext (win-only), devonthink (mac-only) but “index-folders-functionality”, onenote (win-only), circus ponies notebook (mac-only).....)

After long search, I found “docear” to meet most important criteria of no lock-in…..

Any other software suggestions to get the best compromise (no lock-in)?