整理：四猿外
以下排序是按照從技術組件到開發框架到代碼工具，也有一些實在不好分類的，就放到最後了。
WEB 容器
Tomcat
Jetty
JBoss
Resin
https://caucho.com/products/resin
數據庫
H2
SQLite
MySQL
Oracle
https://www.oracle.com/index.html
SQL Server
https://www.microsoft.com/en-us/sql-server/sql-server-downloads
PostgreSQL
MariaDB
緩存
Redis
Memcached
消息隊列
Kafka
RocketMQ
Pulsar
RabbitMQ
負載均衡
LVS
http://www.linuxvirtualserver.org/
NGINX
分佈式存儲
Ceph
HDFS
https://hadoop.apache.org/docs/r1.2.1/hdfs_design.html
數據庫集羣
MHA
https://github.com/yoshinorim/mha4mysql-manager
分佈式協調
ZooKeeper
大數據相關
Storm
Flink
Spark
HBase
Flink
ClickHouse
Doris
日誌收集與分析
Filebeat
https://www.elastic.co/beats/filebeat
Logstash
https://www.elastic.co/logstash/
Kibana
搜索
Elasticsearch
系統監控
SkyWalking
https://skywalking.apache.org/
zipkin
分庫分表
ShardingSphere
https://shardingsphere.apache.org/
Mycat2
微服務
Spring Cloud
https://spring.io/projects/spring-cloud
RPC 框架
Dubbo
https://github.com/apache/dubbo
gRPC
https://github.com/grpc/grpc-java
網絡框架
Netty
MVC 框架
Spring Framework
https://spring.io/projects/spring-framework
Spring Boot
https://spring.io/projects/spring-boot
Spring Boot 基礎就不介紹了，推薦看這個免費教程：
數據層框架
MyBatis
https://github.com/mybatis/mybatis-3
MyBatis-Plus
https://github.com/baomidou/mybatis-plus
Hibernate
數據庫連接池
HikariCP
https://github.com/brettwooldridge/HikariCP
Druid
https://github.com/alibaba/druid
Redis 客戶端
Jedis
https://github.com/xetorthio/jedis
Redisson
https://github.com/redisson/redisson
Redis 系列教程：
https://www.javastack.cn/database/redis/
Rest 接口設計與開發
Swagger
數據參數校驗
Hibernate Validator
https://hibernate.org/validator/
安全相關
Shiro
Bouncy Castle
https://www.bouncycastle.org/java.html
jjwt
Reactive 編程
Akka
RxJava
https://github.com/ReactiveX/RxJava
vert.x
單元測試
JUnit
測試輔助
JMockit
Mockito
https://github.com/mockito/mockito
JMeter
Selenium
日誌記錄
Log4j2
https://logging.apache.org/log4j/
Logback
SLF4J
代碼質量檢查
Checkstyle
https://github.com/checkstyle/checkstyle
Spotbugs
https://github.com/spotbugs/spotbugs
代碼生成
Lombok
領域語言定製
ANTLR
配置文件解析
config
https://github.com/lightbend/config
序列化格式
Avro
Thrift
Protobuf
https://github.com/protocolbuffers/protobuf
模板引擎
Freemarker
https://freemarker.apache.org/
Thymeleaf
Office 文檔處理
POI
PDF 處理
iText
Apache PDFBox
高性能隊列
Disruptor
https://lmax-exchange.github.io/disruptor/
HTTP 客戶端
Async Http Client
https://github.com/AsyncHttpClient/async-http-client
Feign
https://github.com/OpenFeign/feign
Retrofit
https://square.github.io/retrofit/
二維碼解析
ZXing
https://github.com/zxing/zxing
定時任務調度
Quartz
https://github.com/quartz-scheduler/quartz
JSON 解析
Gson
https://github.com/google/gson
Jackson
https://github.com/FasterXML/jackson
fastjson
https://github.com/alibaba/fastjson
分佈式事務
Seata
https://github.com/seata/seata
屬性映射
MapStruct
https://github.com/mapstruct/mapstruct
本地緩存
Ehcache
Caffeine
https://github.com/ben-manes/caffeine
系統排錯與調優
JMH
http://openjdk.java.net/projects/code-tools/jmh/
Arthas
https://github.com/alibaba/arthas
命令行參數解析
JCommander
計算機視覺
JavaCV
https://github.com/bytedeco/javacv
工具集合
Guava
https://github.com/google/guava
Hutool
構建工具
Maven
Gradle
Bazel
本地系統開發
JNA
https://github.com/java-native-access/jna
JVM
Adopt Open JDK
Graal
https://github.com/oracle/graal
Open JDK
多版本 Java 支持
jenv
爬蟲相關
Nutch
Crawler4j
https://github.com/yasserg/crawler4j
jsoup
webmagic
https://github.com/code4craft/webmagic
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