Open-source alternatives to PMTiles

LiteDB is a serverless, embedded NoSQL document database for .NET applications. It persists data into a single portable file, functioning as a BSON data store that resides within the application process rather than running as a separate server. The system is ACID compliant, utilizing write-ahead logging to ensure atomic, consistent, isolated, and durable transactions. It includes built-in encryption to provide secure local data storage and protect files on disk from unauthorized access. The project covers object-document mapping to convert classes into document formats, indexed search capabi

LiteDB is a serverless NoSQL document store and embedded database engine for .NET applications. It persists unstructured documents and binary data into a single standalone disk file, allowing the database to run within the application process rather than as a separate server. The system supports strongly typed queries through Language Integrated Query and allows the execution of standard SQL commands for data retrieval and transformation. It provides native mapping of plain classes into document formats and secures stored information via symmetric-key file encryption. The engine includes cap

This project is a JavaScript-based HTTP download manager and accelerator designed to increase file transfer rates within a web browser. It functions as a multi-threaded download accelerator that retrieves remote resources by splitting files into smaller segments for simultaneous downloading. The tool utilizes HTTP range requests to fetch multiple file segments in parallel, maximizing available network bandwidth. It manages this process through a client-side blob buffer and memory management system that stores binary data before assembling the segments into the final file. The system covers c

Lux is a command line video downloader written in Go designed for extracting and saving video and audio from various websites. It functions as a concurrent media downloader that increases transfer speeds by splitting files into fragments and downloading them using multiple threads. The tool serves as a playlist download manager capable of retrieving entire video collections or specific ranges of items. It also operates as a proxy-enabled media client, supporting HTTP and SOCKS5 proxies and session cookies to access region-locked, private, or age-gated content. Additional capabilities include

This project is an Objective-C HTTP networking library that provides an object-oriented wrapper for CFNetwork to execute synchronous and asynchronous requests on macOS and iOS. It functions as a framework for managing HTTP sessions, performing resumable file transfers, and handling offline content caching. The library distinguishes itself through a resumable file transfer manager that tracks byte offsets and utilizes disk-backed streaming for large uploads and downloads. It also includes a secure credential manager that integrates with the system keychain to handle client certificates and aut

OpenStreetMap Tile Server is a containerized software package that hosts self-hosted map tile services from raw geographical data files. It combines a relational database configured with spatial extensions to store and query map coordinates and geometries with rendering engines that generate raster map images dynamically for interactive mapping clients. The service provides regional map data import to parse and load spatial files into the database alongside automated incremental updates that download recent upstream changes and expire affected tiles. Generated map images are preserved in ded

TiddlyWiki5 is a modular wiki engine and non-linear knowledge base that organizes information into small, linked chunks. It can function as a single-file personal wiki where all content and application logic are stored within one HTML file for local-first use, or as a self-hosted wiki server that serves content over HTTP. The project is distinguished by a data-driven architecture where plugins and extensions are treated as stored data entries. It features a filter-based query engine for manipulating structured data and a transclusion system that allows the live content of one entry to be embe

The project defines an open protocol specification for reliable, chunked, and resumable file transmission over standard HTTP infrastructure. It standardizes client-to-server file transfers across networks, enabling interrupted uploads to resume seamlessly without data loss or retransmitting completed chunks. The protocol manages file upload lifecycles through resource-based session initialization, offset-based byte range tracking, and cryptographic checksum verification to validate incoming data blocks. Additional capabilities include parallel chunk concatenation for joining multiple partial

gdown is a command-line tool that downloads public files and folders from Google Drive without requiring authentication. It bypasses the mandatory virus-scan warning page to retrieve large files that conventional download tools block, and can resume interrupted transfers using HTTP range requests. Beyond simple file downloads, gdown can recursively download entire folder hierarchies while preserving the local directory structure. It lists the contents of a public folder as structured JSON without downloading the files themselves, and resolves a file's real name and extension without retrievin

sql.js-httpvfs is a virtual file system and loader designed to execute SQL queries against read-only SQLite databases hosted on remote static file servers. It enables the retrieval of database files over HTTP without requiring the entire file to be downloaded to the client. The project distinguishes itself by using byte-range HTTP fetching to simulate local random-access reads. It includes a chunking tool that splits large databases into smaller pieces via a JSON configuration, which helps bypass file size limits and optimizes caching. The system covers a range of capabilities including remo

dufs is a self-hosted file manager and static file server that provides HTTP file hosting and WebDAV capabilities. It functions as a tool for sharing files over HTTP and managing folders remotely through both a web-based interface and the WebDAV protocol. The server distinguishes itself by mapping incoming requests directly to a local directory structure and offering a single-binary distribution for deployment. It supports the mounting of the server as a network drive via WebDAV and allows for the replacement of the default web interface using customizable asset overlays. The project covers

Tippecanoe is a command-line tool used to generate optimized vector tiles for web maps. It converts large-scale geospatial datasets, including GeoJSON, CSV, and Geobuf files, into binary vector tiles or MBTiles SQLite databases. The project is designed to maintain map performance and visual quality across different zoom levels. It achieves this through geospatial data downsampling, which includes simplifying geometries and thinning point density to prevent tile overcrowding and keep tile sizes within specific limits. The tool provides extensive data transformation capabilities, such as attri

Martin is a geospatial data API and vector tile server that delivers map tiles, styles, sprites, and glyphs to web map clients. It functions as a PostGIS vector tile server, generating tiles directly from databases, as well as serving data from MBTiles and PMTiles files. The project distinguishes itself through a specialized command line interface for managing MBTiles archives, allowing users to validate, compare, and merge offline map data. It also provides dynamic map styling capabilities, including the generation of signed distance field sprites for runtime recoloring and the on-the-fly pr

Martin is a vector tile server and map asset server that delivers geospatial data from PostGIS databases, MBTiles, and PMtiles files. It functions as a TileJSON metadata provider and a suite of vector tile tooling for generating, validating, and exporting geospatial tile archives. The project distinguishes itself by providing integrated map asset management, generating map styles, sprite sheets, and font glyphs on the fly. It supports advanced visual rendering capabilities such as Signed Distance Field sprites for runtime recoloring and fallback-based font composition to ensure complete chara

Dasel is a multi-format data processor and structured data query tool used for querying, editing, and converting data across JSON, YAML, TOML, and XML. It functions as a universal data converter and a cross-format configuration editor that allows users to interact with various serialization formats through a single unified interface. The tool provides a selector-based interface for extracting and searching nested values and modifying keys and values across different file types. It enables the transformation of data between supported structures to change file types while preserving the origina

This project is a SQL database abstraction layer that provides a consistent object-oriented interface for interacting with multiple relational database systems. It includes a driver wrapper to standardize connections and result sets, a fluent query builder for constructing portable SQL statements, and a type mapper for converting database-specific data types into native application types and vice versa. The library enables programmatic schema management through a schema manager that can introspect database metadata, model structures as objects, and generate the SQL required to migrate between

omni-tools is a browser-based utility suite that provides client-side tools for manipulating PDFs, media files, and data formats. It functions as a collection of web-based processors and calculation engines that execute directly within the browser without requiring server-side processing. The suite includes a client-side PDF editor for merging, splitting, and reorganizing document structures, and a web-based media processor for resizing, trimming, and converting image and video files. It also features a data format converter that transforms structured information between JSON, CSV, and XML fo

Mapshaper is a tool for processing, simplifying, and converting geographic vector data, available as a command-line interface, a web browser tool, and a Node.js library. It functions as a coordinate projector, vector data converter, and web map asset optimizer designed to transform spatial datasets between different coordinate reference systems and file formats. The project is distinguished by its topology-preserving geometry simplification, which reduces vertex counts while maintaining shared boundaries to prevent gaps and overlaps. It further optimizes assets for the web through coordinate

Omim is a suite of compilers and orchestrators designed to transform raw geographic and transit data into renderable offline map binaries. It provides a map generator for converting OpenStreetMap data into optimized binary files, a styling compiler for visual feature representation, and a rendering engine for visualizing geographic data from local storage without an internet connection. The project includes a map tile build orchestrator that sequences generation and optimizes resource utilization based on historical statistics. It also features a dedicated transit data processor that transfor

geemap is a Python library and geospatial toolkit designed for interactive mapping, remote sensing visualization, and satellite imagery analysis. It serves as a Python interface for Google Earth Engine, enabling users to manage cloud-based geospatial workflows and visualize datasets within notebook environments. The project distinguishes itself through automated code conversion, allowing scripts and notebooks to be translated between programming languages. It also provides specialized remote sensing visualization capabilities, such as generating time-lapse GIFs from imagery sequences with sup

Dawarich is a self-hosted location history manager and travel journaling platform. It functions as a personal travel archive that collects GPS coordinates and movement data, providing a private alternative to proprietary tracking services. The system utilizes a PostgreSQL geospatial database to store coordinates, visits, and custom geofence boundaries. The project distinguishes itself as a geospatial data converter and visualization tool, capable of transforming location history between formats such as GPX, KML, and GeoJSON. It allows users to organize GPS tracks and geotagged photos into nam

This project is an educational implementation of a relational database engine written in C. It functions as a SQLite clone, demonstrating the internal mechanics of a database system through a C-based systems project that focuses on manual memory management and file I/O. The engine is distinguished by its use of a bytecode virtual machine, which executes database operations by compiling SQL statements into low-level instructions. It utilizes a B-tree database engine to organize records in a balanced tree structure, ensuring efficient insertion, search, and range scanning. The system covers co

Masuit.Tools is a comprehensive static utility library for .NET and ASP.NET Core development. It provides a broad collection of reusable helper methods and infrastructure components that cover common programming tasks without requiring dependency injection or instance management. The library is organized as flat utility classes, making its functionality directly accessible from anywhere in a project. The toolkit distinguishes itself through a wide range of integrated capabilities that go beyond typical utility libraries. It includes a multithreaded range-request file downloader with pause and

Fern is a toolset for managing API specifications, generating type-safe client libraries, and producing hosted developer documentation. It provides a utility for validating, transforming, and exporting API definitions into standardized OpenAPI formats, serving as a system to maintain a consistent source of truth for API designs. The project differentiates itself through an automated SDK distribution pipeline that publishes generated libraries to package managers such as npm, PyPI, Maven, and NuGet. It also includes an AI-powered search assistant trained on API and SDK specifications to answer

Goofys is a POSIX-compliant cloud object storage gateway that presents remote storage buckets as local system directories. It implements a user-space filesystem that maps S3-compliant and Azure Blob storage services to local mount points, allowing remote objects to be accessed through standard file system operations. The project provides specific mounting capabilities for Amazon S3, Azure Blob Storage, and Azure Data Lake accounts. It utilizes a FUSE-based implementation to interface cloud object storage with the operating system kernel. The system includes performance optimizations such as

node-ytdl-core is a JavaScript library for Node.js designed to extract metadata and stream video and audio content from YouTube. It serves as a media downloader and stream fetcher, allowing users to retrieve video details and media data from remote sources. The library provides specialized capabilities for video extraction, including the ability to parse media URLs for unique identifiers and analyze available formats. It allows for the selection and filtering of specific video and audio streams based on quality and resolution criteria. The project manages network traffic through rate limit a

This project is a cross-platform mapping SDK and hardware-accelerated rendering engine implemented in C++. It provides a shared geospatial core that allows for the embedding of interactive maps into Android, iOS, macOS, Node.js, and Qt applications. The system focuses on high-performance vector tile rendering using OpenGL and GPU primitives to display interactive 3D landscapes and complex geospatial datasets. It transforms compressed protocol buffers into customizable visuals through a style-driven layer pipeline. The capability surface extends to comprehensive location services, including g