It sounds like you're looking for a nostalgic or "warez-style" post about the classic Adobe Flash Professional CS5.5
Adobe officially killed Flash Player on December 31, 2020. Consequently, ADOBE FLASH PROFESSIONAL CS5.5 is no longer sold, supported, or safe to install from random warez sites. ADOBE FLASH PROFESSIONAL CS5.5 -thethingy-
The Bone Tool: Introduced/refined for inverse kinematics (IK) animation, allowing you to create complex, segmented character rigs that move more realistically. It sounds like you're looking for a nostalgic
AS3 was a true object-oriented language. In CS5.5, the compiler was aggressive and fast, producing SWFs that loaded instantly. For indie game devs, -thethingy- meant they could build a platformer in one afternoon, complete with collision detection and XML save files. AS3 was a true object-oriented language
She deleted the bunny layer. Dropped a new keyframe. Drew a matchstick figure — one she’d drawn a thousand times in 2011, during the golden age of Newgrounds and Homestuck and albinoblacksheep. Stick legs. Blocky head. She added a motion tween across 24 frames.
The DecoTool: A forgotten gem. You could draw a single leaf, then paint an entire vine across the stage using algorithmic brush strokes. The "-thethingy-" randomizer prevented visual repetition. Nature hates symmetry, and so did CS5.5.
Despite its corporate ambivalence, CS5.5 is remembered fondly for one reason: It was the last version that worked offline without a subscription. (CS6 introduced the option; CC killed perpetual licenses). This allowed a generation of independent animators (e.g., Egoraptor, OneyNG) to produce high-quality vector content without cloud dependency.