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P Alternatives
Similar projects and alternatives to P
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
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keploy
Unit, API & Integration Testing Agent for Developers. Generate tests, mocks/stubs for your APIs that actually work!
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yugabyte-db
YugabyteDB - the cloud native distributed SQL database for mission-critical applications.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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orioledb
OrioleDB – building a modern cloud-native storage engine (... and solving some PostgreSQL wicked problems)
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coyote
Coyote is a library and tool for testing concurrent C# code and deterministically reproducing bugs.
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hermit
Hermit launches linux x86_64 programs in a special, hermetically isolated sandbox to control their execution. Hermit translates normal, nondeterministic behavior, into deterministic, repeatable behavior. This can be used for various applications, including replay-debugging, reproducible artifacts, chaos mode concurrency testing and bug analysis.
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Iron python
Implementation of the Python programming language for .NET Framework; built on top of the Dynamic Language Runtime (DLR).
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Testura.Code
Testura.Code is a wrapper around the Roslyn API and used for generation, saving and compiling C# code. It provides methods and helpers to generate classes, methods, statements and expressions.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a better P alternative or higher similarity.
P discussion
P reviews and mentions
Posts with mentions or reviews of P.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2025-05-30.
- Formal Modeling and Analysis of Distributed (Event-Driven) Systems
- Systems Correctness Practices at Amazon Web Services
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Systems Correctness Practices at AWS: Leveraging Formal and Semi-Formal Methods
If you are wondering "why do formal methods at all?" or "how is AWS using P to gain confidence in correctness of their services?", the following re:Invent 2023 talk answers this question, provides an overview of P, and its impact inside AWS: (Re:Invent 2023 Talk) Gain confidence in system correctness & resilience with Formal Methods (Finding Critical Bugs Early!!) - https://www.youtube.com/watch?v=FdXZXnkMDxs
Github: https://github.com/p-org/P
- The P Programming Language
- The Future of TLA+ [pdf]
- Formal methods: Just good engineering practice?
- Property-based testing in practice [pdf]
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Gem adds support for creating state machines for attributes on any Ruby class
I worked on a state machine framework in another language, and have definitely have found less terse to be pretty good. Typing a few extra characters isn't that bad, especially if it makes some awful bit of evented code easier for someone to understand.
Of the things available open source, I think P-lang is pretty cool: https://github.com/p-org/P/blob/master/Tutorial/1_ClientServ...
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The Actor Model and the Chess Clock
Your proposed syntax reminded me of https://p-org.github.io/P/
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The TLA+ Video Course
I’ve gotten a lot of good about TLA+ and the more recent the P language has been really promising lately. It’s got a good pedigree and is being increasingly used as AWS as well.
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A note from our sponsor - InfluxDB
www.influxdata.com | 21 Jun 2025
Stats
Basic P repo stats
14
3,371
7.5
8 days ago
p-org/P is an open source project licensed under MIT License which is an OSI approved license.
The primary programming language of P is C#.
Sponsored
InfluxDB – Built for High-Performance Time Series Workloads
InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
www.influxdata.com