About

A tool born in a team

LDC (Lanceurs de cailloux, the stone throwers) is a CS2 team first. Three of us discovered Counter-Strike in 2000, back when LANs happened in basements. Twenty-six years later, we still play together, in 2026, somewhere between Faceit level 7 and 9. Enough time to miss a few grenades, and to want to remember them.

In September 2025, the team started building itself a tool to keep what it learned together: videos of its lineups, its strats, screenshots of its spots. That tool is called ezstrats today. It was written by two of us, a former developer and the one we call the little genius of vibe coding. The others supplied the lineups, the criticism, and the match nights to put it all to the test.

The old Onlinerz

The first version in the changelog, on 24 January 2026, was a desktop app still called CS2mngr. You dropped your clips into a folder, they showed up by themselves in “To tag”, and a quick screen let you sort them. Over the winter came strat videos, round pacing, the team glossary, WhatsApp sharing, then a browser mode to open it in the Steam overlay.

In June, the tool moved to the web: onlinerz.fr, one shared base, one account per player. The summer added everyone's positions, golden rules as playing cards, and post-match debriefs.

Along the way

We use it mid-match: CS2 on the first screen, the tool on the second, and no time to click. Part of the road was fixing what got in the way in those conditions: in July, videos that took up to seven seconds to start; in September, a strats page with 12-pixel text and gappy cards, replaced by a wall you read without a click.

The rebuild

On 18 September, we started over. A new interface, “Le Local”: paper, ink, handwritten notes, and pages you read at a glance, without opening anything. Mirage in 3D, built from the game's real geometry, then six more maps. The next day, onlinerz.fr switched to the new version, with all our data.

Since then, every team can have its own private space. The Windows app drives the second screen with real hotkeys: a single key is enough, where Chrome needs Ctrl or Alt for a keyboard key. The integrated view puts every grenade in its place on the 3D model. The Map book gathers what we know about a map. And since October, the official library can be read without an account.

The tool isn't finished. It keeps moving at the pace of our matches, often between two rounds, and the changelog shows it version after version.

— the LDC team

About

A tool born in a team

The old Onlinerz

Along the way

The rebuild

Milestones