MapsterMapper/Mapster
A fast, fun and stimulating object to object Mapper observed · 2026-08-28
Health v2 · maintenance only
99/100
- Activity 99
- Release rhythm 98
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 11.0
- age_days: 4478
- days_rel: 14
- days_push: 8
- n_releases_24m: 9
Adoption not part of the score
5163 stars · 407 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
Mapster is a fast, convention-based object-to-object mapping library for .NET/C#. It supports mapping to new or existing objects, queryable projection, dependency injection, and code generation of DTOs and mapper classes.
Use cases
- map entities to DTOs in a .NET API
- replace AutoMapper with a faster mapper
- project EF Core queryables directly to DTO types
- generate DTO classes and mapper code at build time
- map one object onto an existing instance
When to choose
- you need high-performance object mapping in C#
- you want compile-time code generation for mappers
- you use EF Core and want ProjectTo-style projections
When to avoid
- your project is not on .NET/C#
- you need complex, highly customized mapping logic better served by hand-written code
Facets
library · maturity active
serialization developer-tools developer-tools backend apis dotnet cross-platform object-mapping dto csharp code-generation automapper-alternative
2 sources
- readme: https://github.com/MapsterMapper/Mapster · fetched 2026-08-28 · 0eb6f35887e8
- homepage: http://mapstermapper.github.io/Mapster/ · fetched 2026-08-29 · 8c8423efb693
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| MapsterMapper/Mapster | main | 99 |
For agents
markdown · JSON · MCP: product_card(name="MapsterMapper/Mapster")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem