Hi,
It is actually not against the rules to discuss other software just promoting your own software:
If you’re caught shilling, you’re banned and you’re not coming back. A shill is an owner, employee or associate of a seller of products or services who pretends (or purposefully omits) any association with the product or service, while pretending to be a satisfied customer or interested bystander. People who omit an association with a product or service for other reasons (they’re paid to post about it, they’re helping a friend, etc.) so that they can help promote it are also shills.
I am sure there are schematic drawing programs out there, but I am not familiar with any particular to optical systems.