An open source personal finance program, initially aimed at developing capabilities similar to Quicken[?]. Current development is more closely aligned to developing features for small business.
... Pädagogik als System (1848)
Aesthetik des Hässlichen (1853)
Die Poesie and ihre Geschichte (1885)
Studien (1839-47)
Neue Studien (1875-78).
He published also ...