texfilt – A (La)TeX log filter
Works under DOS, OS/2 and Linux. Code written in noweb, so documented source available.
Maybe you are interested in the following packages as well.
- texlog-extract: Extract errors and warnings from TeX logs
- texlogsieve: Filter and summarize LaTeX log files
- impose: PostScript imposition and support utilities
- aurora: Header files for dvips to make colour separations