Projeli

Projeli is a modular framework and declarative language for describing, planning, and tracking complex projects. It combines a lightweight runtime engine with a flexible plugin system, enabling teams to model tasks, dependencies, resources, durations, and constraints in a single, version-controlled specification. Projeli aims to support both planning and what-if scenario analysis, as well as ongoing execution monitoring.

Its core data model centers on projects, tasks, and resources. Tasks have identifiers, titles, estimated durations, start and end constraints, and dependency relations (for example, finish-to-start or start-to-start). Resources include personnel or equipment with capacity limits. Projects can span multiple milestones and support portfolio views. The engine can generate schedules, detect bottlenecks, and perform resource leveling.

Projeli configurations are written in a concise, human-readable syntax inspired by YAML and JSON, and may be serialized in multiple formats. The engine exposes APIs for importing data from common project-management tools and exporting results as charts, tables, or machine-readable events. A live event bus enables real-time collaboration across participants and tools.

Use cases include software development, construction, research programs, and product-launch campaigns. The framework is favored for its extensibility, auditability, and support for scenario analysis, while smaller teams may find the initial setup overhead challenging.

Critics note a learning curve and potential performance constraints on very large project graphs. Projeli's ecosystem relies on community-developed plugins, which may vary in quality and longevity. Despite these considerations, the framework is used in various organizations to harmonize planning practices and to document project rationales alongside schedules.