Radios and receivers
Radio transmitters
Radiomaster TX16S

The Jumper T16 Pro alternative is finally here, Radiomaster TX16S is just hitting the market. Same form factor, no more flat cables, touch screen, improved navigation and it's black! Hell yeah! Built-in multiprotocol module, full TBS Crossfire capability and Hall effect gimbals are great additions as well. It's a good option as a first radio or an upgrade from FlySkys or cheap FrSky models. Bear in mind, the quality is adequate to the price!
Flysky FS-i6X

The cheapest radio worth having? FlySky FS-i6X. The previous generation (without X) was great for the price, the improved model is even better. 10 channels and around 1km of an effective range is more than most beginners really need. If only gimbals were slightly better... Still, it's cheap and light!
Jumper T18

Jumper T18 had some problems during the launch, that's true. The biggest of them was a misbehaving roller. That was fixed, and now Jumper T18 can be considered a valid competition to Radiomaster TX16S. The killer feature of T18 is a 5-in-1 Multiprotocol module that is compatible with FrSky R9 receivers!
Radiomaster TX12

Radiomaster is most probably the cheapest OpenTX radio worth having! It is small, light, and allows you to use FrSky D16 and D8 ACCST compatible receivers. Bear in mind, it is an entry-level radio transmitter! Build quality is relatively good, but it has fewer switches and worse gimbals than middle-class radios. Still, for the price, it's an excellent option for a first radio! Much better than FlySky FS-i6x!
Long Range Radios
Team BlackSheep Tango 2

Small and light gamepad like controller that is also suited for long-range FPV? Yes, both are possible with TBS Tango 2. It's small, gamepad like and equipped with a Crossfire transmitter module. With external MultiProtocol Module, Tango 2 is also able to connect with almost all 2.4GHz receivers from FrSky and FlySky. Uh, Pro version has folding gimbal sticks!
Team BlackSheep Crossfire Nano Receiver

Team BlackSheep Crossfire Nano receiver is all you need for racing, freestyle, and long-range. Combined with Micro or Full TX module, it will give you dozens of miles or range and full telemetry capability.
Team BlackSheep TX Module

If you are interested in Long-Range FPV without any compromises (besides price, weight, and size, obviously) Crossfire Full TX module is what you are looking for. Whooping 2W of RF output power, Bluetooth, and a transparent serial downlink for the telemetry of your choosing. It's really hard to find something more long-range than this!
Team BlackSheep Crossfire Micro Starter Set

It's a Starter Pack. You get one Crossfire Micro transmitter and 3 Crossfire Nano receivers to migrate your whole flying fleet (or only some of it) to the "no more failsafe" radio system. And yes, Starter Pack is cheaper than all the components purchased separately.
Team BlackSheep Crossfire Micro V2

TBS Crossfire Micro TX is what 99% of you need. It fits entirely in the JR bay of your radio and has enough output power to give you all the range. In 150Hz mode, due to extra low latency, Crossfire should satisfy even the most hardcore FPV racers.
Team BlackSheep Diamond

TBS Diamond is an upgrade antenna for Crossfire TX and Micro TX modules.
2.4GHz Transmitters and receivers
Jumper 4in1 Multiprotocol Module

How cool would it be to be able to use your OpenTX radio transmitter with any 2.4GHz receiver out there? You know, X9D Taranis with FlySky, Nirvana with Spectrum, and so on? Thanks to the 4in1 Multiprotocol Module, you can do it. All you need is an OpenTX radio with a JR bay.
Jumper R1F

Jumper R1 and R1F are cheaper alternatives to FrSky XM+ receivers. They offer diversity, telemetry and RSSI output. R1 has SBUS and SmartPort while R1F offers F.Port that combines SBUS with telemetry on one pin.
FlySky FS-A8S V2 AFHDS-2A receiver

Finally... it's a real shame that FlySky had no small receivers from the very start. This is probably one of the reasons it lost with the FrSky. Luckily, together with FS-A8S it is possible to use modern small FPV drones with FlySky radios again! FS-A8S is a basic 8CH model with a single antenna but offers PPM, i-Bus and S.Bus outputs to suit everyone's need.
Oversky XR602T-F2

Competition moves the hobby forward, so here is a direct competition to FrSky XM+ and R-XSR receivers: Oversky XR602T-F2. Sbus, F.Port, telemetry, diversity and they state that it has a better range than FrSky. Bruce Simpson tested it and he states it's true. Kudos for him!
FlySky FS-iA6B

If you are not afraid of a relatively big size, FS-iA6B is a receiver-of-choice for FlySky compatible radios. Bear in mind, you will not fit it on a modern 5" drone, but all airplanes will accommodate it nicely. Comparing to "standard" FS-iA6, it offers PPM and i-Bus outputs!
FlySky FS-X14S diversity receiver

So, you want something better than 8 channel no-diversity receiver for FlySky AFHDS-2A radio? Go with FlySky FS-X14S! Not only it can receive data for 14 channels, but it also has dual antenna diversity, PPM, i-Bus, and S.Bus support and can fit modern FPV drones!