neo.tax - automated R&D tax credits for startups = extra month of burn
Transferslot - Easily buy and sell side-projects
Stripe Atlas Taxes - Help file your business taxes
MicroAcquire - A free & anonymous startup acquisition marketplace
TaxDrop - Get your taxes done in 10 minutes
BitsForDigits - An acquisition marketplace for profitable internet businesses. We make it anonymous & free for owners of $100K+ revenue startups to attract full & partial acquisition offers. Free for acquirers to join for a limited time. No commissions, ever.