Blender Addons:

• propchart
  Similar in concept to 'Property Chart' -- an addon which has always come bundled with Blender -- They both allow you to expose arbitrary properties on the sidebard UI, but this one lets you access more properties than dotted notation will allow (Namely access of items inside of collections).
• matlib
  A material librarian for blender. Just shows up as three dots on your material properties panel, a menu providing A) to add or choose the library folder, B) a menu of all the materials found in the library, and C) an operation to send the current material to the library. Does not require saving the blend file. The scanning for materials is done at blender startup and kept in an sqlite database. Speedy operation, no thumbnails or thumbnailer, use good names for your materials and you're good to go!
• tkit
  This one is just a handful of super-handy edge-selection operators such as: extend at the tips, deselect the tips, select edges touching the tips, select the outer border, deselect the outer border, select parallel or not parallel.

Vim Plugins:

• ritmus
  My Vim-as-an-IDE flow needs one of these. It's so I can press a button and run some code, in another terminal, with the least amount of hassle. Ok, some hassle because currently it only does 'smart' stuff for python but if a Makefile is present then it uses that, so you're able to run whatever.
• argloco My Vim-as-an-IDE flow also needed one of these. I put a command in a file and source it. The command sets up my editor with named taboo tabs and local argument lists so there can be semantic grouping and a way to cycle within groups (:GoForth & :GoBackth) as well as among groups (gt & gT).
• dazi
  Edit a graphviz dot file, press a button to see it rendered in feh. Press escape to close feh. In feh right-click -> save image puts the file in home.

My dotfiles:

• dotfiles