RunRadis by mi4me or Jim H already a very capable screener and back tester is being actively improved.
On 6/22 v1.1 added pick to allow screening on the original backtester.
7/17 v1.1.2 added mod() function and instructions for compiling
8/1 v1.1.3 fixed bugs in the DB loader.

I probably spent 100's of hours and 2 years building my own version of a similar Python and MySQL based screener and back tester.
Jim/mi4me has done all the programming plus documenting the results and giving the community an open source free downloadable program.

The current version still has a few limitations like monthly only but is definitely usable.

All you need is a AAII SIP subscription $299/yr plus a days effort to download and install his program and then download and install as many years of historical data from AAII you want to backtest over.

github.com: Code repository, jrh3/RunRadisJM

Of course it's a lot more trouble than just subscribing to P123 ultimate currently at $2,400 / year where I get 20 years and a few more capabilities.

Seriously I believe this could be an open source gold mine. If a few more people start using this and sharing results, then start adding a few more features (again it's open source).

RAMc