Managing a large MSFS addon library has always been a bit of an unglamorous ritual. You may be used to open your addon manager, enable a few scenery packages, launch Navigraph, pull up your SimBrief plan, maybe remember to start VATSIM, and eventually load the sim. It works, but it’s a lot of tab-switching and muscle memory. PERFLIGHT, a new free companion app that’s been quietly building a following since February, wants to collapse all of that into a single, structured workflow.
The app is built around a familiar concept: it stores your addons outside the Community folder and activates them via directory junctions, the same approach that made MSFS Addons Linker a staple of the community back in 2020. In fact, PERFLIGHT includes a one-click migration tool that imports your existing Linker folders, presets, and geolocation data automatically. If you’ve been on Linker for years, the transition is meant to be painless.
What sets PERFLIGHT apart is what it layers on top of that foundation. The central idea is a customizable pre-flight checklist, where each step can trigger an actual action: syncing your SimBrief flight plan, launching Navigraph or VATSIM, activating a specific set of addons, or opening a URL. You build the checklist once, and then each pre-flight session runs through it sequentially, checking things off as you go.
The “Smart Actions” feature is the most interesting piece of the puzzle. When you sync a SimBrief flight plan, PERFLIGHT reads the departure and destination and checks your addon library to see if you have matching scenery and aircraft packages. If something is missing, it prompts you to enable it with one click, or offers to search flightsim.to, iniBuilds, and Contrail if you don’t have it installed at all.
On the library management side, the app supports card and table views, browsing by category or developer, custom thumbnails, and grouping addons into reusable Sets. The Sets feature is particularly useful if you fly a mix of different aircraft types or regularly switch between VFR and IFR setups, since you can batch-activate entire collections in a single toggle.
PERFLIGHT launched on February 17th and has seen fairly active development since. PERFLIGHT Pro, a paid subscription tier, is listed as coming soon on the app’s website. The developer describes it as adding “deeper automation and intelligence,” including cleanup tools for unused addons, recommendations based on your flying habits, and AI-assisted flight planning tailored to your installed library. There’s no pricing or timeline confirmed yet.
For now, PERFLIGHT is free to download from flightsim.to.
