- nmon - Monitor all system resources at once
- ncdu - Disk usage for directories
- htop - Better than top
- Running MySQL on Amazon EC2 with EBS - Simple directions for how to create and mount a filesystem from a block device.
- Ubuntu or Debian!
- Locust - Load testing with Python and a web GUI
- arrow - Better dates and times for Python
- iPython Notebook - Save iPython sessions for later
- ipdb - Step-by-step debugging in Python
- Requests - Simple HTTP requests in Python
- Emacs for Mac OS X
- emacs-starter-kit
- Built in Emacs tutorial - Open Emacs, hit Control+h, then t.
- Built in Emacs help - Open Emacs, hit Control+h, then Control+h again.
- oh-my-zsh - Starter kit for ZSH
- tmux - Better than screen, use backtick (`) as control key instead of Control+b.
- MariaDB - Modern fork of MySQL
- Online incremental backups for MySQL - Lots of nice management on top of xtrabackup/innobackupex.
- Remap Caps Lock to Control!
- ShiftIt - Maximize and manage windows better in OS X
- iTerm - Deals more nicely with tmux than Terminal
- Sequel Pro - Query and manage MySQL from OS X
- More interesting key mapping - I don't use these, but they're interesting
- Beamer - Send movies at full quality from your computer to Apple TV (better quality than AirPlay)
- POP - Prototyping on paper
- Sketch - Better than Photoshop for wireframing and design
- Skitch - Quickly annotate and share screenshots
- Google Fonts - Downloadable and web-friendly fonts
- The Noun Project - Free and premium vector icons
- PostGIS - GIS indexes for Postgres
- GeoDjango - GIS support for Django
- TileMill - Design beautiful custom maps with CSS-like syntax
- MapBox - Customizable maps for web or mobile
- QGIS - General GIS tool
- twofishes - Foursquare's coarse geocoder based on GeoNames data
- GIS data sources
- OpenStreetMap - Free wiki map of the world, including lots of hyperlocal data
- Natural Earth - Global country and state/province polygons, also includes other vectors and rasters for the world
- tz_world - Timezone polygons
- GeoNames - Free global datasets of points and point-based US ZIP codes
- Maponics - Best premium provider of neighborhoods and ZIP code polygons
- TIGER/Line - Official US data about school districts, counties, cities, states, ZIP codes, roads
- Anonymous Pro coding font - from @turingmachine
- Source Code Pro coding font - from @wadey