Bitcoin Testnet LN

As of 2019-02, the Bitcoin Testnet Lightning Network has about 300 active nodes:
#recksplorer
Lightning Network Explorer
explorer.btc-test.ln.dead.cash
1ML indexes node and channel information for  the Bitcoin Testnet:
1ML - Lightning Network Search and Analysis Engine - Bitcoin testnet
Lightning Network Search and Analysis Engine
1ml.com
Bitcoin Testnet Lightning Apps
RADAR ION features a how-to guide for joining the Lightning Network, including a testnet bitcoin faucet, wallet and app recommendations, and a well-connected Lightning node to connect to:

Radar ION - Your guide to the Lightning Network
Master the Lightning Network with our app and wallet recommendations, developer and troubleshooting tools, Lightning wiki, getting started tutorials, and more!
ion.radar.tech
Several apps are live on the BTC Testnet:
Starblocks | Spend bitcoin with LN on TESTNET
starblocks.acinq.co
Y'alls: Lightning Network powered publishing.
Publish and read content using micro-payments
testnet.yalls.org
https://testnet.lightninggem.com/
testnet.lightninggem.com
Satoshi's Place
A Bitcoin Lightning Network powered online multiplayer game inspired by Reddit Place and the million dollar homepage.
testnet.satoshis.place
CoinGate Shop Demo
example.coingate.com
https://testnet.wildln.com/
testnet.wildln.com
Blockstream Satellite Client
spacebit.live
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Tutorials - Previous
Lightning Apps
Spacebit Satellite Client
Last updated Tue Feb 12 2019 22:46:24 GMT+0000 (UTC)