80+ Gadgets(30 More than ysoserial). JNDI-Injection-Exploit-Plus is a tool for generating workable JNDI links and provide background services by starting RMI server,LDAP server and HTTP server.
Why do you think that https://github.com/pimps/JNDI-Exploit-Kit is a good alternative to JNDI-Injection-Exploit-Plus