Independent designer Robbie Tilton released an image editing software named Compositor on September 18, positioning it as a "Photoshop alternative" and choosing to make it completely free and open source. He stated that he initially developed this tool to free himself from Adobe Photoshop's subscription payment model, and later decided to release it publicly.

Compositor is not intended to be a fully-featured Photoshop alternative but is deliberately "narrowly focused," retaining only the core tools that Tilton personally uses in his image compositing workflow, removing what he considers unnecessary features. He candidly mentioned in a tweet that this workflow might seem "a bit outdated" by 2026, but he plans to continue using it until AI tools can achieve pixel-level detail handling with true precision.

Tilton particularly emphasized the significant difference in software size: Compositor's entire application is only 12MB, while the Photoshop installed on his machine is as large as 6455MB, highlighting Compositor's design orientation towards "lightweight".

According to publicly available information on the project’s GitHub, Compositor is developed in Swift, based on native Xcode development, and only supports macOS (minimum system requirement macOS 26). It is released under the MIT open-source license, allowing free use and modification for commercial and private purposes. Its features include layer management and blending modes, non-destructive transformations, selection tools (rectangle/lasso/magic wand), brushes and retouching/cloning tools, adjustment layers, as well as filters like blur, noise reduction, and lens correction, supporting multi-project tab switching. It can import JPEG, PNG, HEIC, TIFF formats and export as JPEG. The release version is code-signed and notarized, distributed in .dmg installation package format.

Notably, according to related reports, Tilton utilized an AI model named "GPT-6 Astra" during the development process to complete the initial functional planning and code structure, followed by manual adjustments and refinements by himself. This development approach reflects the common path of current independent developers using AI-assisted tools to accelerate software prototyping and then refining it manually.

After the project release, the GitHub repository has received 45 stars and 1 fork, with users submitting feature requests in the project issue area for a "Windows version". However, as of now, Tilton has not responded, indicating that the software will remain a macOS-exclusive tool in the short term, not supporting Windows users.

From an industry perspective, small professional software like Compositor, which is "individually developed, custom-made, and open-source released," reflects a persistent long-tail phenomenon in the creative tools sector: facing industry-standard software like Adobe Photoshop, which is feature-rich but has high subscription costs and large sizes, some professional users and independent developers turn to create lightweight alternatives that only cover their core needs, leveraging the open-source community for potential future maintenance and feature expansion. Such projects typically do not pose a substantial commercial threat to industry giants like Adobe but continue to attract a segment of users dissatisfied with subscription models or software bloat.

Source: Public Information