| Show HN: Hikaru Labs – An offline, client-side alternative to CloudConvert | CloudConvert | Other software | 3 |
| Find an open source alternative to anything | anything | Other software | 2 |
| PipeVoice: The Free local alternative to wispr flow | wispr | Other software | 1 |
| Deep dive into iroh: Replacement for WireGuard or P2P layer for your application | WireGuard | Other software | 16 |
| Show HN: Akasia – A libre, metric-compatible alternative to Aptos | Aptos | Other software | 2 |
| Alternatives to the UK government's social media ban | the UK | Other software | 2 |
| China nears launch of mBridge as alternative to Swift | Swift | Other software | 6 |
| W: Europe's alternative to mainstream social media | mainstream | Other software | 3 |
| Switzerland built an alternative to BGP. Nobody noticed | BGP. Nobody | Other software | 8 |
| Taipy – Alternative to Streamlit | Streamlit | Other software | 2 |
| German CEO launches W Social, a European alternative to X | X | Other software | 2 |
| Show HN: A Good Alternative to Zendesk | Zendesk | Other software | 2 |
| Lumen – A Binary Alternative to JSON-RPC for Model Context Protocol (MCP) | JSON-RPC | Other software | 4 |
| Pouta Forms, open-source alternative to TypeForm | TypeForm | Other software | 2 |
| Antidepressants and antipsychotics could be alternatives to opioids, study finds | opioids | Other software | 4 |
| Show HN: Pebble, an open-source alternative to Minecraft: Java Edition | Minecraft | Other software | 7 |
| Custom Prompts: a minimal, customizable alternative to Skills | Skills | Other software | 1 |
| Show HN: An Alternative to Selenium IDE | Selenium IDE | Other software | 1 |
| LibreWXR: Self-hostable, drop-in replacement for the Rain Viewer API | the Rain Viewer | Other software | 2 |
| OpenScreen is your free, open-source alternative to Screen Studio | Screen Studio | Other software | 2 |
| HN: Conversion.business – A Gamified Alternative to reCAPTCHA | reCAPTCHA | Other software | 3 |
| Show HN: Nudgra – Open-source, self-hostable alternative to ManyChat | ManyChat | Other software | 3 |
| Show HN: TabyAgent – A lighter and easier alternative to OpenClaw/Hermes | OpenClaw | Other software | 3 |
| Grid: E2EE Alternative to Life360 | Life360 | Other software | 2 |
| Show HN: Alternative to WebXR, TypeScript SDK for multi-user VR app development | WebXR | Other software | 2 |
| SupXML: The modern, memory-safe XML parser drop-in replacement for libxml2 | libxml2 | Other software | 4 |
| I built an open-source alternative to dynamic workflows: OpenFlow CLI | dynamic | Other software | 3 |
| Token-Mediating Back end: An alternative to the BFF architecture | the BFF | Other software | 2 |
| Neo4j Acquires GraphAware for an Intelligence Analysis Alternative to Palantir | Palantir | Other software | 6 |
| Show HN: SupXML, modern memory-safe XML parser replacement for libxml2 | libxml2 | Other software | 3 |
| Migrating from Firestore to PostgreSQL | Firestore | Other software | 2 |
| A Desperate Plea for a Free Software Alternative to Aspera (2018) | Aspera | Other software | 3 |
| Realm is a mobile database: an alternative to SQLite and key-value stores | SQLite | Other software | 2 |
| Show HN: RxCheck – Replacement for the discontinued NLM drug interaction API | the | Other software | 1 |
| PaceVer – Pace Versioning (an alternative to SemVer, for mobile apps) | SemVer | Other software | 2 |
| Show HN: Open-source general-purpose alternative to Exa Websets | Exa Websets | Other software | 4 |
| RxCheck – Drop-in replacement for the discontinued NLM drug interaction API | the | Other software | 2 |
| A native, local-first alternative to Logitech Options+, written in Rust | Logitech Options+ | Other software | 4 |
| Migrating from Python to Go with a 12x speedup | Python | Other software | 3 |
| OpenLogi – Rust Alternative to Logi Options+ | Logi Options+ | Other software | 5 |
| The Muser – Open-source alternative to Suno, runs locally, you own everything | Suno | Other software | 4 |
| Show HN: Open-source alternative to Codex Chronicle, using Apple's local OCR | Codex Chronicle | Other software | 2 |
| LinkedIn introduces Northguard, its replacement for Kafka (2025) | Kafka | Other software | 2 |
| DNS: A Replacement for Finger | Finger | Other software | 3 |
| Migrating from Apache Spark 3 to Spark 4 | Apache Spark 3 | Other software | 3 |
| Show HN: Open-source alternative to Duolingo for learning anything | Duolingo | Other software | 7 |
| TheDeck – A touchscreen alternative to the StreamDeck using RP2040 | the StreamDeck | Other software | 2 |
| Static Forms – open alternative to Formspree for static websites | Formspree | Other software | 1 |
| I built three Wikipedia-based search tools as alternatives to Google AI | Google AI | Other software | 2 |
| Mastodon Isn't Just a Replacement for Twitter (2022) | Twitter | Other software | 3 |
| DjVu file format, alternative to PDF | PDF | Other software | 2 |
| Show HN: Onda – a cross-platform alternative to DSView for DSLogic analyzers [video] | DSView | Other software | 3 |
| French NATO commander: Europe has no alternative to Palantir's warfare tech | Palantir's | Other software | 5 |
| Show HN: Macfigure – Mac configuration in pkl. Simple alternative to Nix-Darwin | Nix-Darwin | Other software | 2 |
| Show HN: Pg_deltax, Apache-licensed alternative to TimescaleDB | TimescaleDB | Other software | 39 |
| Migrating from ingress-Nginx to Envoy Gateway | ingress-Nginx | Other software | 1 |
| Migrating from Go to Rust | Go | Other software | 8 |
| Polylux: Open-source replacement for Asus Armoury Crate that saves 470MB RAM | Asus Armoury Crate | Other software | 2 |
| I built an affordable alternative to AppTweak and Sensor Tower ($19.99 lifetime) | AppTweak | Other software | 1 |
| Show HN: Mimik – open-source local-first alternative to Scribe and Tango | Scribe | Other software | 4 |
| Show HN: ChatbotX, an open-source alternative to ManyChat | ManyChat | Other software | 2 |
| Show HN: Splitby v2.0.0 – a modern alternative to cut | cut | Other software | 2 |
| An open-source, self-hosted alternative to SaaS monitoring for Laravel | SaaS | Other software | 1 |
| Show HN: I built an open-source, local-first alternative to LangSmith | LangSmith | Other software | 6 |
| NYMes – a modern alternative to classic NFTs | classic NFTs | Other software | 2 |
| RootAsRole – A better alternative to sudo(-rs)/su | sudo | Other software | 2 |
| Show HN: Cryptick – free and open-source alternative to Minute Cryptic | Minute Cryptic | Other software | 5 |
| Migrating from Ubuntu to Debian | Ubuntu | Other software | 3 |
| Ask HN: What types of alternative communities have you seen work or not and why? | | Other software | 1 |
| Feedback about a Visualping alternative using AI to monitor websites | | Other software | 1 |
| Show HN: People you know, an end-to-end encrypted private Instagram replacement | | Other software | 4 |
| Show HN: Sortaballs – alternative modes for classic sort ball puzzle | | Other software | 1 |
| Show HN: Draco – A single-binary, self-hostable Firecrawl alternative in Rust | | Other software | 15 |
| Show HN: A $25 DIY alternative to $159 AI voice recorders – BYOK or local | | Other software | 11 |
| Show HN: Kobra – a Shadcn alternative focused on design quality | | Other software | 2 |
| I migrated a 4 year old PrestaShop store and made a pratical ETL guide on it | | Other software | 2 |
| Show HN: Turn a Nintendo Joy-Con into a Codex Micro Alternative | | Other software | 2 |
| Show HN: Masthead – A free, hosted, open source Hugo alternative | | Other software | 1 |
| Show HN: Mochi – a performance-first SveltKit alternative | | Other software | 5 |
| Typst with Pandoc: A Modern, Fast Alternative to (Xe)LaTeX for PDF Generation | | Other software | 3 |
| Show HN: SharpSkill – A LeetCode Alternative with real interview outcomes | | Other software | 5 |