Chemoventory comes in two versions: Free Lite version and one time paid Standard version. If all of your chemicals are within one location, then Lite version is recommended otherwise choose standard version. Academic discount is available for standard version. More detailed differences are listed below.

Lite version can be easily upgraded to standard version without changing the database entries.

Chemoventory requires open source PHP web server and MySQL database.

Comments
It appears to be a reasonable system for very small businesses , it wouldn't be something for high volume business or where fast response is required