"Development and deployment never been so simple"

The grammar error here is a little jarring to native English speakers, and it's particularly noticeable because it's in the tagline. Fixing that would make a better first impression.

"Development and deployment have never been so simple" would work better, IMHO. Or perhaps you'd prefer "Development and deployment made simple", in keeping with the terse / minimalist theme.

While I'm at it, a few other minor corrections, in roughly decreasing importance the further down the page we go:

"GitHub and BitBucket integrations allows you automate DevOps." should be "GitHub and BitBucket integrations allow you to automate DevOps."

"Servers and Clouds linking" should probably be "Link Servers and Clouds" for verb consistency with previous headings; "Create... Build... Link... Manage... " is consistent, whereas "Create... Build... ..Linking... Manage..." is not.

"You can link your server to Last.Backend with special command. Just copy it and execute in a terminal." could be "You can link your server to Last.Backend with a special command. Just copy it and execute it in a terminal."

Finally, "Just look at scheme and you can see what's going on. Color element indication provide all information about all warning and problems. Logs output gives you ability to know much more." could be improved as "Just look at the scheme to see what's going on. Colored elements convey information about warnings and problems at a glance. Log output provides the ability to know much more." (or similar)

HTH! :)