Buffer.

In their words

• Buffer KPIs Here are the Buffer KPIs. Check out their Annual Run Rate, Average Revenue per Account and total number of customer since 2012.
• Buffer Pitch Deck This is the Pitch Deck Buffer used to raise $500,000 on their Seed Round in 2011. Check it out for new insights.
• Launching Minimally and Managing a Distributed, Transparent Team In this talk, Joel discusses how Buffer got started, their philosophy and core company values, and building a transparent, distributed team.
• Buffer's Product Roadmap Check out Buffer's public Product Roadmap built on Trello, see how they have been developing their product for the past few years.