Professor Flaxbeard's Wondrous Steam Power Mod (Flaxbeard's Steam Power, or FSP for short) is a tech mod based on steam power as its core. The mod includes a variety of steam tech that enhance your abilities. The goal of FSP is innovative content that encourages fun play rather than trying to one-up other tech mods. FSP is currently in development.
Information can be found on the FTB Wiki. A changelog can be found also on the FTB Wiki
Downloads after xbony and Santa began maintaining the mod can be found on CurseForge