Graph database specialist Neo4j is expanding free access to its enterprise platform for startup companies, a move the company said would help later-stage entrepreneurs expand their data visualization efforts as that market continues to heat up. The company said Tuesday (March 26) it would extend free access to its enterprise edition to startups with up to 50 employees and less than $3 million in annual revenues. Previously, the program covered startups with fewer than 20 employees. Read more: