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Top 8 C# Parser Library Projects
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Obligatory plug for Sprache (https://github.com/sprache/Sprache) - a nice library I've been using whenever I've needed to create a little parser for something in C#. I'm not dogmatically opposed to using regexes, just for me they feel quite clunky for many tasks and tend to grow legs and become harder to understand.
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Recognizers-Text
Microsoft.Recognizers.Text provides recognition and resolution of numbers, units, date/time, etc. in multiple languages (ZH, EN, FR, ES, PT, DE, IT, TR, HI, NL. Partial support for JA, KO, AR, SV). Packages available at: https://www.nuget.org/profiles/Recognizers.Text, https://www.npmjs.com/~recognizers.text
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Lexepars
Concise monadic parser combinator library with separate lexer/parser phases, off-side rule and big-size input support.
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
C# Parser Library discussion
C# Parser Library related posts
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Parser Combinators Beat Regexes
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Library to parse slash commands with validation?
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I made a new filtering library for .NET projects
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how would you solve this? Filtering a db model from the api and persisting the filtration rules in a safe and db agnostic way
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What is a tool you use or a bit of code that you like to use that you feel is worth bragging about?
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Any prerolled SQL and/or keyword searches out there?
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GitHub - nreco/nlquery: Parser for end-user search-like queries and rule-based named entity recognition (NER) in context of tabular dataset schema.
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A note from our sponsor - InfluxDB
www.influxdata.com | 1 Sep 2025
Index
What are some of the best open-source Parser Library projects in C#? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | Sprache | 2,436 |
| 2 | Recognizers-Text | 1,724 |
| 3 | Superpower | 1,221 |
| 4 | Pidgin | 1,019 |
| 5 | CSLY | 398 |
| 6 | VoxReader | 79 |
| 7 | Silverfly | 20 |
| 8 | Lexepars | 11 |
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