Saturday morning software tools roundup

Stuff I recently saw which intrigued…

* “GeometricTools”:http://geometrictools.com (via @donpark) — great repository of code snippets for math and geo operations.
* “How to find freely usable photos on the net”:http://www.cbsnews.com/8301-505143_162-57399598/how-to-find-photos-you-can-legally-use-anywhere/ — excellent tips, I’d been using Wikimedia Commons as well (thanks @ellegold)
* “The Lean Startup Bundle”:http://www.appsumo.com/lean2012/?gid=WzYsIDM2MCwgIjIwMTIwMzI5MTE1NCIsICJ0dyIsICJib3RkZXRhaWwiLCBudWxsLCAiZWtpIl0= OK I hope to gosh I would never need all these things but some good ideas in here
* Step by step diffeq solutions in “WolframAlpha”:http://blog.wolframalpha.com/2012/01/30/step-by-step-differential-equation-solutions-in-wolframalpha/. What a resource.
* Charlie Kindel articulates “why I need to flip to Powershell”:http://ceklog.kindel.com/2012/03/25/update-coping-with-the-oss-command-line-on-windows/ on my Windows box. He also makes a strong case for switching to “Sublime Text 2”:http://www.sublimetext.com/2