A handy lookup table of similar technology and services to help ex-googlers survive the real world :) pull-requests are very welcomed. Please do not list any confidential projects!

For a working example of (some) of these technologies integrated together, see: https://github.com/google/startup-os

See also: System Design Primer, The Hadoop Ecosystem Table, Map AWS services to GCP products, Database of Databases, Google Open Source Glossary

Technology

Core Technology

Google Internal	Google External	Open Source / Real-World
MapReduce		Apache Hadoop, Spark
Flume	DataFlow	Apache Beam
Protocol Buffer	Protobuf, FlatBuffers	Cap'n Proto, Thrift, Avro, Amazon Ion, CBOR, kryo
Stubby	gRPC	Thrift, Bolt
Chubby		Apache Zookeeper, etcd, HashiCorp Consul
Goops / PubSub	Cloud Pub/Sub	Apache Kafka, Apache Pulsar, Facebook LogDevice
//base		abseil

Infrastructure

Google Internal	Google External	Open Source / Real-World
Borg	Kubernetes	Apache Mesos, Apache Aurora, HashiCorp Nomad
GSLB	Cloud Load Balancing - Internal	AWS ELB, Istio, linkerd
OnePlatform	API Gateway	Swagger
GFE, Maglev, uberproxy	Cloud Load Balancing - HTTPS / External	envoy, AWS ALB, HAProxy, nginx, F5
uberproxy (sso proxy)	Identity-Aware Proxy	buzzfeed-sso, Pomerium
Zanzibar	Zanzibar Research Paper	SpiceDB/authzed, Ory Keto, topaz, Opal, (iam)Keycloak, Warrant
data center hardware	open compute
Jupiter, Starblaze
B4, Stargate, TE
USPS, Andromeda
ESDN		Faucet
broccoli man

Storage

Google Internal	Google External	Open Source / Real-World
GFS/Colossus		HDFS, Ceph, GlusterFS, MooseFS
BigTable	Cloud BigTable	PrestoDB, Cassandra, HBase, Accumulo, DynamoDB, ScyllaDB
Spanner	Cloud Spanner	Vitess, CockroachDB, TiDB
ColumnIO / Capacitor		Apache Parquet, ORC
sstable	levelDB	RocksDB, pebble
zippy	Snappy	lz4
RecordIO	Riegeli, TFRecords, & in OR-Tools, szl	stuffed-record-stream

Services

Google Internal	Google External	Open Source	SaaS
Dremel	BigQuery	Apache Drill, Presto, Spark(sort-of),	AWS Athena, Redshift Spectrum, Snowflake
Dremel UI		Redash, Metabase, Apache Superset
Search (Mustang, Alexandria)		Elasticsearch, OpenSearch, Solr, Lucene	algolia
pubsub	pubsub	NATS.io, RabbitMQ, PubNub	AWS SQS/SNS, AWS AppSync
MillWheel	Cloud Dataflow	Apache Flink, beam
Colab	Colaboratory	Jupyter	Observable
PLX	Google Data Studio		Mode
Monarch	paper
Napa	paper
MakerSuite	MakerSuite

DevOps

Google Internal	Google External	Real-World
Assimilator		Dominator
Blaze	Bazel	Buck, Pants, please.build, Blade, recc, BuildBuddy, flare.build
Oncall		PagerDuty, OpsGenie, VictorOps
varz/borgmon/monarch	Cloud Monitoring	Datadog, Prometheus, M3, librato, newrelic, skylight, scout, Scotty/tricorder, netdata, bosun, also this and this
Viceroy	Cloud Monitoring	Grafana
Exception/Error Tracking (thirdeye)		Sentry.io, Raygun.io, Rollbar, Honeybadger, Airbrake, OverOps, ELK stack
styleguides	google styleguides	PEP-8, HoundCI auto-style-reviewer
Sponge		EngFlow
Blaze/Forge/TAP/BuildCop	Cloud Build	buildkite, CircleCI, travis, jenkins, gitlabCI, github, Drone
Forge/ObjFS		EngFlow, flare.build
Sandman(test env)/Guitar
Sisyphus / Rapid		Spinnaker, lambdaCD, screwdriver.cd, CodeShip, shipit-engine, GoCD, AWS CodeDeploy, Capistrano, Fabric, ConcourseCI, samson
MPM		Docker, OCI
borg / borgcfg / gcl	Jsonnet, Cue	AWS Cloudformation, Puppet, Chef, Salt, Ansible, Terraform, kubecfg, pulumi, Nix
logging, analog	StackDriver	logstash, fluentd, PaperTrail, cernan, loki
CodeSearch, Grimoire	Zoekt kythe Code Search (for Google open source code only, with separate UI for Android and Chromium. Go CLI source.)	Sourcegraph, OpenGrok, livegrep
Critique, Gerrit, Mondrian etc.	Gerrit	Reviewable , Phabricator
cider		Eclipse Che, Cloud9, gitpod.io, Coder, Code-Server (VSCode in a Tab), DevZero
buganizer	Google Issue Tracker	JIRA, bugzilla, github issues, Linear
Bugjuggler		SnoozeThis
ToTT	Google Test Blog	Increment
Copybara / MOE	Copybara, MOE
workflow/dependency management		Luigi, Airflow, digdag, Pachyderm, Dask
ErrorProne	ErrorProne	SpotBugs, FindBugs
Dapper	stackdriver trace	zipkin, OpenTelemetry, jaeger, LightStep, Honeycomb
C++ Tips of the Week	Abseil C++ Tips of the Week
DiRT		ChaosMonkey, aws fis
Rosie		microplane, silver-platter
API Improvements Proposals	AIP
g4 {fix, submit}		Trunk.io, Graphite
probers		cloudprober

Security

Google Internal	Google External	Open Source
prodaccess/LOAS		Keymaster
prod secrets/identity management		chamber, knox, SPIFFE

IT / Operations / Misc

Google Internal	Real-World
software engineering at google 1, 2	Software Engineering at Google: Lessons Learned from Programming Over Time
SRE @ google
valentine	Vault, 1Password, Lastpass, pass, keeper
OWNERS files in repo	github CODEOWNERS
snippets	Khan/snippets
SnipIt	recordit, CloudApp, dropbox screenshots, Snippyly
stuff (SaaS IT management)	productiv, intello, zylo
stuff (Device Management)	jamf
device security monitoring	Red Canary
beyondcorp	beyondcorp
go/ links	golinks, go, Goat, trotto, go-shorten
google3 philosophy	innersource, monorepo, YouTube talk
doing code review	code review
safely sharing 1-time secrets	sendsecure.ly, croc, onetimesecret, privatebin
messaging	mattermost, Slack, gchat
tech talks	TechTalks @ Google
g3doc	writethedocs, docs-as-code
GUTS	spoke, freshservice
MOMA	glean

PeopleOps / Culture

Google Internal	Real-World
OKR	CultureAmp OKR, Lattice Goals, Ally, workboard
HRIS/ERP	Namely, BambooHR, Workday, Paylocity
peer bonus	bonus.ly
kudos	heytaco, slack ++ bot
perks	fond
talks	Talks @ Google
dory	slido
edge, people ops training	LifeLabs
googlegeist	Culture Amp, humu, tinypulse, peakon
Meng	Search Inside Yourself
Lazlo	Work Rules
Claire Stapleton	Tech Support - existential advice for the modern tech worker
books about google	How Google Works, In The Plex, Software Engineering at Google

also check out xoogler.co, which organizes events, slack channels etc

disclaimer: I'm not affiliated with any of the technologies/products mentioned above.

disclaimer: I left Google a number of years ago so some of the naming might be dated.