There are a number of revolutionary and vital applications on the market. According to this Globe and Mail story, all of them promise to make your life easier, but each one is unique. Just like your business. The sheer quantity of mobile applications optimized for entrepreneurs is impressive, but the quality not so much.
"Evernote: It captures your brilliant ideas and entrepreneurial insights the moment they strike, documenting them as text, photos or audio recordings and auto-synchronizing all content to the desktop. Available for: iPhone, Android, BlackBerry, Windows Mobile, Palm webOS. Features: Geo-location information for mapping and search, multiple language support. Price: Free
"Gwabbit: Gwabbit's patent-pending semantic technology simplifies contact capture and management, automatically scanning incoming e-mails and transforming sender information into contact records in your address book. Available for: BlackBerry. Features: Address book management prompts, alert services for contacts who've been 'gwabbed.' Price: Free"