Being a Collection of Player Options and House Rules Various and Sundry for Classic Fantasy Role-playing Games Old and Dear
excerpts from the designer's blog:
...a small horde of house rules, player options, variant classes and other crunchy bits from the last two years of play in the Hill Cantons in two cities (and a few countries if you count in my co-conspirators Skype games from Dragonsfoot). ... I compiled these various bits into a working document called the Hill Cantons Compendium.
Although a good chunk of the main section is likely only of interest to players in the campaign, the appendixes--most notably the three new variant classes for Labyrinth Lord and it's Advanced Edition book-- may be of greater interest to you the faceless hordes of the Internet.
Classes introduced are the Mountebank, the White Wizard and the Feral Dwarf. Other options are presented for combat and character creation, along with a few odds and ends of house rules.