A nice infographic on 135 blockchain startups with ICO's split into different categories such as:

• Asset Management
• Exchanges & Wallets
• Browsers & Social
• Media & Advertising
• Trading
• Crowdfunding & Lending
• Gambling & Gaming
• Infrastructure & Development
• DAO & Token Launch
• Computing & Storage
• Prediction Markets
• Healthcare & Insurance
• Identity & Internet of things
• Payments & Banking
• Financial Services
• Other

Source: https://www.cbinsights.com/research/blockchain-ico-tokens-startup-market-map-expert-research