ErgoTabcalc is a general calculation and report system. Calculation sequences are stored in the database. These sequences are made from simple operations on data, eg, add two table columns, or sort a table. This is similar to relational algebra.
Concalc is a console spreadsheet program for windows written in dev-c++ (mingw) what has all the most common features, all files are available and fully working from the moment when this project was created on SourceForge, includes FAQ.