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Riak is an open source, distributed database. Riak is architected for: * Low-Latency Riak is designed to store data and serve requests predictably and quickly, even during peak times. * Availability Riak replicates and retrieves data intelligently, making it available for read and write operations even in failure conditions. * Fault-Tolerance Riak is fault-tolerant so you can lose access to nodes due to network partition or hardware failure and never lose data. * Operational Simplicity Riak allows you to add machines to the cluster easily, without a large operational burden.

Xapian is an Open Source Probabilistic Information Retrieval library, released under the GPL. It's written in C++, with bindings to allow use from other languages. Xapian is designed to be a highly adaptable toolkit to allow developers to easily add advanced indexing and search facilities to their own applications. Xapian features include: - Ranked probabilistic search - word importance weighting - Relevance feedback - Phrase and proximity searching - Full range of structured boolean search operators - Term stemming - Database files > 2GB - Platform independent data formats - Allows simultaneous update and searching.

LMDB is an ultra-fast, ultra-compact key-value data store developed by Symas for the OpenLDAP Project. It uses memory-mapped files, so it has the read performance of a pure in-memory database while still offering the persistence of standard disk-based databases, and is only limited to the size of the virtual address space, (it is not limited to the size of physical RAM). LMDB was originally called MDB, but was renamed to avoid confusion with other software associated with the name MDB.

TOra is an open-source multi-platform database management GUI that supports accessing most of the common database platforms in use, including Oracle, MySQL, and Postgres, as well as limited support for any target that can be accessed through Qt's ODBC support. In addition to regular query and data browsing functionality, it includes several additional tools useful for database administrators and developers - which aims to help the DBA or developer of database application. Features PL/SQL debugger, SQL worksheet with syntax highlighting, DB browser and a comprehensive set of DBA tools.

Xapian is an Open Source Probabilistic Information Retrieval library, released under the GPL. It's written in C++, with bindings to allow use from other languages. Xapian is designed to be a highly adaptable toolkit to allow developers to easily add advanced indexing and search facilities to their own applications. Xapian features include: - Ranked probabilistic search - word importance weighting - Relevance feedback - Phrase and proximity searching - Full range of structured boolean search operators - Term stemming - Database files > 2GB - Platform independent data formats - Allows simultaneous update and searching.

Tile38 is an open source (MIT licensed), in-memory geolocation data store, spatial index, and realtime geofence. It supports a variety of object types including lat/lon points, bounding boxes, XYZ tiles, Geohashes, and GeoJSON. Features: Spatial index with search methods such as NEARBY, WITHIN, and INTERSECTS. Realtime geofencing through persistent sockets or webhooks. Object types of lat/lon, bbox, Geohash, GeoJSON, QuadKey, and XYZ tile. Support for lots of Clients Libraries written in many different languages. Variety of client protocols, including http (curl), websockets, telnet, and the Redis RESP. Server responses are RESP or JSON. Full command line interface. Leader / follower replication. In-memory database that persists on disk.

KchmViewer is a chm (MS HTML help file format) viewer. Unlike most existing CHM viewers for Unix, it uses Trolltech's Qt widget library, and does not depend on KDE or Gnome. However, it may be compiled with full KDE support, including KDE widgets and KIO/KHTML. The main advantage of KchmViewer is non-english language support. Unlike others, KchmViewer in most cases correctly detects help file encoding, correctly shows tables of context of russian, korean, chinese and japanese help files, and correctly searches in non-english help files.

Capstone is a lightweight multi-platform, multi-architecture disassembly framework. Features: * Supported architectures: ARM, ARM64 (aka ARMv8), Mips, PowerPC & X86 * Clean/simple/lightweight/intuitive architecture-neutral API * Provide details on disassembled instruction (called "decomposer") * Provide some semantics of the disassembled instruction, such as list of implicit registers read & written. * Implemented in pure C language, with bindings for Python, Ruby, C#, Java, GO, OCaml & Vala available. * Native support for Windows & *nix (including MacOSX, Linux, *BSD & Solaris) * Thread-safe by design * Distributed under the open source BSD license

Capstone is a lightweight multi-platform, multi-architecture disassembly framework. Features: * Supported architectures: ARM, ARM64 (aka ARMv8), Mips, PowerPC & X86 * Clean/simple/lightweight/intuitive architecture-neutral API * Provide details on disassembled instruction (called "decomposer") * Provide some semantics of the disassembled instruction, such as list of implicit registers read & written. * Implemented in pure C language, with bindings for Python, Ruby, C#, Java, GO, OCaml & Vala available. * Native support for Windows & *nix (including MacOSX, Linux, *BSD & Solaris) * Thread-safe by design * Distributed under the open source BSD license

Ccdoc is a tool for extracting comments from C++ source code and presenting it in HTML format, very similar to Java's JavaDoc tool. The tagging used in ccdoc is very similar to that of Javadoc, with adaptations for the C++ specifics, of course. Ccdoc supports extracting comments from both header and implementation files. In contrast to most other C++ doc'ing applications, ccdoc analyses the code before it has been run through the pre-processor, so things such as macros can actually be included in the documentation. It's usage is not quite as straight forward as JavaDoc's, but considering the quality of the output, it is well worth the effort.