Wired Magazine (UK Edition) ran a feature in April giving examples of 20 companies pushing the boundaries of how they work internally; collaboration, cloud-based teams, loose internal structures, social media.
Topics range from abolishing budgets, scaling any business, building a business around a mission, mastering data along the entire supply chain, giving employee creative autonomy and embracing cloud workforces.
Definitely worth a read through to get some ideas of how companies are achieving this (mostly without software).
To read the article in full and all 20 companies, go to Wired.co.uk