| ▼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 | 
| 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 | 
| 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 | 
| 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 | 
| LV2 Core | Core LV2 specification, see http://lv2plug.in/ns/lv2core for details |