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 - Homepage of the Lightning Network
The homepage of the Bitcoin Lightning Network, with a suite of onboarding resources, developer tools, technical tutorials, lightning network app store, and wiki to help you explore the future of Bitcoin.
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
Lightning Gem
The Lightning Gem is a fun game of speculation where anyone can win bitcoins.
testnet.lightninggem.com
https://testnet.satoshis.place/
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 -8