Siril is an open-source project built for astrophotographers.

Is Siril still active?

Unverified. Siril has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

What projects are similar to Siril?

Similar projects tracked by PulseGate include Cool FormKit Lite, Input Masks for Contact Form 7, and Tidy Author Box.

Siril is developed by Free-astro Team.

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Siril

Name: Siril
Author: Free-astro Team

FlathubDesign & Creative

Siril is an image processing application tailored for astronomy. It aligns, stacks, and enhances images from various formats including sequences and SER files. It specializes in noise reduction and improving the signal-to-noise ratio of deep-sky and planetary captures.

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Overview

4 features

Siril is a Design & Creative project. It focuses on processing and enhancing astronomical images from multiple captures to improve signal-to-noise ratio. Siril is an open-source project aimed at astrophotographers. It is available for free. It ships for Linux.

Behind Siril is Free-astro Team. Key capabilities include Image Stacking, Noise Reduction, and alignment.

Image Stacking
Noise Reduction
Alignment
SER File Support

Built with & integrations

Runs on

Linux

Trust & compliance

Verified signals

HTTPSFree tier

Indexing history

What PulseGate has recorded for this listing

Indexed29 Jul · 15:37 UTC
Siril verified against its public source
Source: PulseGate · Open

Frequently asked questions about Siril

What does Siril do?: Siril focuses on processing and enhancing astronomical images from multiple captures to improve signal-to-noise ratio. It is catalogued under Design & Creative on PulseGate.
Who is Siril for?: Siril is an open-source project built for astrophotographers.
Is Siril free?: Yes — Siril is free to use.
What platforms does Siril run on?: Siril runs on Linux.
Is Siril still active?: Unverified. Siril has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What projects are similar to Siril?: Similar projects tracked by PulseGate include Cool FormKit Lite, Input Masks for Contact Form 7, and Tidy Author Box.Cool FormKit Lite Input Masks for Contact Form 7 Tidy Author Box
Who makes Siril?: Siril is developed by Free-astro Team.

At a glance

Platforms: Desktop
Languages: English
First seen: 29 Jul 2026
Built for: astrophotographers
Model: Open source
Solves: Processing and enhancing astronomical images from multiple captures to improve signal-to-noise ratio.

Registered as

Flathub: org.siril.Siril

Developer

Free-astro Team

Live coverage

Identity confidence: Medium · 70
Indexed: 29 Jul 2026
Lifecycle: Alive
First seen: Jul 2026
Last seen: 29 Jul 2026

Identity audit (13)

Slug: siril-flathub-org
Lifecycle state recorded: 29 Jul 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 29 Jul 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
Name from: Written by a language model from the project's public pages.
Category from: Assigned by a language model.
Summary from: Taken from the project's own store listing.
Languages from: Detected by a language model from page content.
Last updated: 4 Aug 2026
Canonical URL: https://flathub.org/apps/org.siril.Siril

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