| ▼Atom | A generic value container and several data types, see http://lv2plug.in/ns/ext/atom for details |
| Forge | |
| Utilities | |
| Buffer Size | Access to, and restrictions on, buffer sizes; see http://lv2plug.in/ns/ext/buf-size for details |
| LV2 Core | Core LV2 specification, see http://lv2plug.in/ns/lv2core for details |
| Data Access | Access to plugin extension_data() for UIs, see http://lv2plug.in/ns/ext/data-acess for details |
| Dynamic Manifest | Support for dynamic data generation, see http://lv2plug.in/ns/ext/dynmanifest for details |
| Event | Generic time-stamped events, see http://lv2plug.in/ns/ext/event for details |
| Instance Access | Access to the LV2_Handle of a plugin for UIs; see http://lv2plug.in/ns/ext/instance-access for details |
| ▼Log | Interface for plugins to log via the host; see http://lv2plug.in/ns/ext/log for details |
| Logger | Convenience API for easy logging in plugin code |
| MIDI | Definitions of standard MIDI messages, see http://lv2plug.in/ns/ext/midi for details |
| Morph | Ports that can dynamically change type, see http://lv2plug.in/ns/ext/morph for details |
| Options | Instantiation time options, see http://lv2plug.in/ns/ext/options for details |
| Parameters | Common parameters for audio processing, see http://lv2plug.in/ns/ext/parameters |
| Patch | Messages for accessing and manipulating properties, see http://lv2plug.in/ns/ext/patch for details |
| Port Groups | Multi-channel groups of LV2 ports, see http://lv2plug.in/ns/ext/port-groups for details |
| Port Properties | Various port properties |
| Presets | Presets for plugins, see http://lv2plug.in/ns/ext/presets for details |
| Resize Port | Dynamically sized LV2 port buffers |
| State | An interface for LV2 plugins to save and restore state, see http://lv2plug.in/ns/ext/state for details |
| Time | Properties for describing time, see http://lv2plug.in/ns/ext/time for details |
| User Interfaces | User interfaces of any type for plugins, http://lv2plug.in/ns/extensions/ui for details |
| Units | Units for LV2 values, see http://lv2plug.in/ns/extensions/units for details |
| URI Map | C API for the LV2 URI Map extension http://lv2plug.in/ns/ext/uri-map |
| URID | Features for mapping URIs to and from integers, see http://lv2plug.in/ns/ext/urid for details |
| Worker | Support for non-realtime plugin operations, see http://lv2plug.in/ns/ext/worker for details |